You To Use In Addition To These All Forms In Bold Must Be: Fill & Download for Free

S-E-X.Yup. You heard it right. There, I just said it.“I’m saving myself for my wedding night.”No way! Fine, it’s your life and do whatever pleases you. But, I’ve just realized one interesting fact that today’s Chinese people generally are more… positive about this entire sex thing which their ancestors had been doing day and night since day 1 the clay dolls made by Goddess Nv Wa came to life but they themselves were too ashamed to admit.Sex used to be a taboo and people never brought it up, nor admitted that they too had sex drive. Premarital sex for women was absolutely no-no in most places and men were just so obsessed with having a virgin as wife. Besides, sex education was a joke. Look, you have a thing, she has a hole. Do it, yes. Easy. Very easy. And oh right, sorry, no, don’t do it. Just wait till you are married.Hence, in addition to all the great answers there are, I’d also like to point it out that Chinese society is being more Westernized in that people today are more open about sex. Premarital sex among couples is pretty common and to some people it’s a must to make sure they are sexually compatible with their partners if they truly want to spend the rest of their lives with someone. Here is an inside joke:Shit the foreigners are so bold they sleep with their partners even before marriage.Shit the Chinese are so bold they marry somebody even before sleeping with them.Sex education is catching up, not in schools however, but in many mainstream social media outlets. There are bloggers, writers, and show hosts that relentlessly work to educate the mass public on the topic of sex, including how to please your partner, and of course, how to do it safely. It’s not shameful. It’s not dirty and you should not feel guilty to feel such urge. That’s one of the many messages they are trying to deliver. Enjoy sex, that’s another message from them.And yes, these are the bright side of China becoming more Westernized in terms of common people’s sex life, surely there is the dark and grim side. Parents and teachers are still very conservative and holding back on this topic in front of their children. A very ironic example would be you could see abortion ads virtually all over the city but hardly any attempt of promoting protections. A lot of men, who are definitely well educated, young, have decent jobs and could talk about feminism, blah-ism all day long and overall appear quite open-minded, at the end of the day, would only want a virgin, as in pure and innocent, woman as wife.On some level I’m deeply fascinated by modern Chinese society because it can be so ambivalent about so many things. China and sex, what an alluring combo…

Here is a handy guide I compiled for new users. It is a mash-up of How-Tos, Dos and Don'ts, Community Etiquette, giving back to the community and asking for help. If you are new to Quora, here is a list of How-Tos, DOs and DONTs and community etiquette that you must be aware of.Getting started on QuoraA. HOW TOs1. Setting up your feed/timelineFollow interesting people and follow topics of your choice. Both can be searched from the search bar.Most followed topics on Quora in 2012Most followed topics on Quora in 2013Most upvoted answersMost viewed questionsMost followed blogsMost upvoted blog postsDone? Good! Now start reading. Give yourself some time. After you have spent around a month on the site, you will get a hang of how everything works. Till then, try not to ask questions or answer. It will ensure that the quality of content that you contribute is as per the community norms.Here is a user-curated list (courtesy Murali Krishnan) of some really good answers in 2013.2. Following peopleFollow good people as they will push interesting content to your feed. There is no rule about who to follow.Except one: You ALWAYS follow Marc Bodnick.Also, following are some great places to find people you would like to followA list of people topic wiseTop Writers 20122013 Top WritersDo not, under any circumstance, follow people recklessly just to expect them to follow you back and increase your follower count. Moreover, NEVER follow people and unfollow them after they follow you back.3. Asking questionsBefore asking your first question on Quora (yay!), read theguidelines for doing so.Also, check if the same or similar question already exists. A good way to do so is to use Google instead of Quora search.(Perform the search : <question text> site: http://quora.com)4. Answering questionsGuidelines for answers on QuoraA few basic things to keep in mind:Do not plagiarize content without proper attribution (for guidelines for attribution, read the next section of the post).Do not post image only answers as they will be collapsed by admins (one of the admins, User-12016406912133266280, recently told me that the reason for the same is because images cannot be indexed or searched and also that images are not useful for users with vision impairment as their primary tool for accessing Quora is the braille script). The use of images should be done such that even without them, your answer makes sense.Use proper formatting as it improves the readability of the answerEnsure that the entire answer isn't in Bold or Italics orUnderlined.5. Upvoting and downvoting contentIt is generally agreed that answers that either answer the question honestly, provide a fresh perspective or add to existing answers should be upvoted.As for downvoting, there are some good and bad reasons to downvote on Quora. Again, it seems to be the general consensus that one should not downvote answers just because you disagree with the answerer's views or beliefs.6. Starting your blogHover on the "Your name" link on the top right bar and click on "Create Blog".(a) Fill in the essential details.(b) Have a name for the blog. If you are too lazy to rename your blog from the default "User's Posts", rest assured, I would probably not like to read through it.(c) Have a central theme for the blog. Or like my blog, have none.(d) Do not add topics recklessly to either your blog or your blogposts just to garner more visibility.7. Proper use of TopicsSelecting topics for a Quora question or blog postThe rule here is to use the most apt topic as the parent topic. Any other relevant topic must be added as secondary.Although there are no rules that guide maximum no. of topics, one must try and restraint them to 8-10. Also, topics that are only tangentially related to the question should not be added just to increase visibility for the content.8. Saving content for future referenceThis is a problem which many users have complained about. There is no way on Quora right now to archive content for future reference. However, there are a lot of quick work-arounds that are easy to implement.Bookmarks (although it soon becomes a lot cumbersome)Make a secret/public blog and share questions/answers/postsMake multiple blogs for different types of content - for example, History, Tips and Tricks, Reading, TIL, Movies etc.Use a bookmarking service like Pocket. Works wonderfully on laptops, phones and tablets9. CommentingThere is no general policy on comments, but they are best used as a platform to provide additional insights or different perspective than the answer. They are also to provide a community interaction platform.However, comments like "LOL", "WTF", "Cool story bro!" should be generally avoided as they do not add value.10. Muting - taking back control of your feedNothing is for everyone. People have different tastes, preferences and reasons for being on Quora.If there is a topic, person, question (in general, content) you do not want to see in your feed, mute it.Users can be muted from the left sidebar of their profile.Topics can be muted from the "Options" button next to the follower count (right side, topbar) on the topic page.Questions can be muted directly from the feed by clicking on the "X" (that appears as a hover-over) over the follow "tick" next to a question. It can also be used to mute the primary topic of the question or the person because of whom the question got pushed to your feed.DOs and DONTs1. BNBR PolicyBe Nice, Be Respectful (Quora policy)Do not be disrespectful towards people just because you don't agree with them. You can disagree and still behave in a civilized manner. If someone is trolling or troubling you, block them. Or report them (see next section)2. Self promotion and SpamSelf promotion is allowed on Quora as said in the blog post by Marc Bodnick -Eliminating Quora's Policy Against Self-Promotion.However, one must disclose relevant affiliations to the product.For example, if I am the developer of a health and fitness app and I write an answer where I claim it is a wonderful app (regardless of whether it is or not), and do not reveal that I have developed it, it might result in a warning from the admins. And in case of repeated offense, a ban.Also, never ever message people in their inbox with such self promotional spam/3. Proper attribution for referenced/copied contentThis is very important. As it says in the policy, copied content must always be block-quoted and preceded by the link to the original source. It is not enough to say, "Found on FB etc" at the end of the page."Source: Page on Copiedcontent<Copied content> "4. Use of images/memesAs already mentioned, use of memes is banned. Use of images, though allowed, is frowned upon if the image does not add to the answer in any way.5. Messaging usersIt is fine to message users if there is a strict need to. Or if you want to thank them or show how much you appreciate them.However, treat the inbox of any user as his/her property. A quick hello is fine, coming everyday and sitting in the year is trespassing.DO NOT:Message people with self promotional contentSend hate messagesSend explicit content or make sexual advancesBe creepy.GIVING BACK TO THE COMMUNITYNow that Quora has allowed you unlimited, free access to such a plethora of information, here is something you can do to ensure that the community becomes self-sustaining.1. Suggesting edits for contentIf you come up with an answer that is more suitable as an extension of an existing answer, it is better to suggest that as an edit to the original one.Also, native English speakers can help non-native speakers by suggesting grammatical or formatting edits.2. Curating topicsTopics can be edited to reflect correct terminology or clear confusion.For example, if there is a topic about a restaurant chain called "Beetle" which is also an insect, it would be appropriate to rename both as "Beetle (Restaurant)" and "Beetle (Insect)".Also, there are tons of duplicate topics on the site. You can help by merging them (the topic with lesser followers with the one with more) by going to the "Manage" section of the topic page.In case you are not sure of whether the topics should be merged, post the same on Topic Gnomery.3. Redirecting questionsThe best way to redirect duplicates of a question to the original is to do a quick Google search of the keywords, open all the links, see at the time stamp*, and merge all n-1 questions into the one which was posted earliest.To see when the question was added, the the date/time next to "Latest Activity" in the "Question Stats" section (right sidebar) and keep scrolling till you reach the end.You will see something like, "XYZ added the question <question content> on <date, time>".(I know this is irksome and Quora management must do something to simplify it)4. Marking question as "best source"As stated in the official policy, it is good to mark questions that may be the best source of information on the question anywhere on the web. You can do this by click on "Options" below the question text and selecting "Mark as best source".A general rule of thumb is to check out the number of answers and cumulative (approx) upvotes. If a question has more than (let's say) 25-30 answers and most of them are well-received, it is most likely the "best source" on the internet.5. Creating a answer wikiAn answer wiki is a like a summary of all the answers. It is incredibly useful as it provides a gist for quick reference.Go to "Options", "Make answer Wiki" and VOILA! you are done.The answer Wiki should echo the sentiment of the existing answers. More in the official policy.6. Reporting policy violationsBeneath every profile, question, answer, comment, blog post is a tiny button that says "Report". It can be used to report any content or profile that violated any of Quora's policy.Judicious use of the feature will lead to weeding out of unwanted content from the site, thereby, improving its quality.7. "Needs Improvement" tagsNot many people know about this. But there are certain topics, that when added to questions, limit their distribution so that the content does not appear in people's feed. These tags are monitored by admins and reviewers to ensure that any content that needs attention is attended to.A complete list of all such tags and when to use them has beencompiled by Ian C. Grieve here.OTHERS1. Using the A2A featureMany people have set their A2A prices low or even zero so that others do not have to spend credits to ask them.(i) Do not spam people with A2A requests just to earn some easy credits (I usually ignore requests if multiple come from the same person)(ii) Check if the person you are A2Aing would be interested in answering the question or have any expertise in the field (a quick check on his/her profile). It is obviously no use asking a guy, "What does it feel like to be a beauty pageant?"2. In need of credits?Ask Jessica Su's New User Fund or Quora Credit Co-Op v2.03. Got a complaint?Post to Rage Against Quora, Quora Moderation Should Look at This or drop a mail to [email protected] case of any bugs, drop a mail to [email protected]. Others(i) Share some loveLoved something Quora did - a new feature, an app update, anything?Share it at Rave for Q u o r a(ii) Feel something was unjustly collapsedLet the community decide The Downvote Appeal Court(iii) Need any other helpBuzz up any Quora admin.List of Current Quora site admins

You don't need energy to travel through any dimension; you only need energy to accelerate, that is, change your velocity, which is the rate at which you move. Moving at constant velocity doesn't cost any energy.However, the question does raise an interesting point, so let me rephrase it as follows: "Why can we expend energy to change our rate of travel through space, but it doesn't seem like we can do the same for our rate of travel through time?". Or even more succinctly: "What determines our velocity in the time dimension?"In order to answer this question we must understand what "travel through the time dimension" actually means. Intuitively, we must always move along the time dimension, otherwise time will not pass. How does movement along the time dimension relate to movement along the spatial dimensions, though? Let us try to understand this. It will require some math, but only at the high school level.First, we need to understand the concept of spacetime. Spacetime is the 3 dimensions of space, plus the 1 dimension of time, added together to form a 4-dimensional spacetime. Why would anyone do that, you ask? The theory of relativity says that whenever we want to compare what two observers see, and these observers are moving relative to each other, space and time get mixed up: time gets "dilated" and space gets "contracted". Where did the "missing" space go and where did the "extra" time come from? Turns out, in a way, space actually got "recycled" and turned into time! Weird, huh?Now, let's try to understand how a particle moves through spacetime. In order to make the math simpler, I'm going to throw away two space dimensions. So now our spacetime is 2-dimensional, with 1 time and 1 space dimension. I will call the time coordinate [math]t[/math] and the space coordinate [math]x[/math].A shady trick I'll use here is to set the speed of light in vacuum to one: [math]c=1[/math]. You must wonder: how can I do that? The speed of light is about 300,000,000 meters per second, so setting it to 1 seems like a "pretty big" understatement. Ah, but I didn't say it's 1 meters per second, I said it's just 1! This means that I'm changing my units such that one second is now equal to 300,000,000 meters. Then the ratio 300,000,000 meters per second is now "300,000,000 meters per 300,000,000 meters", and everything cancels out very nicely, leaving only the pure number 1. If this still doesn't make sense to you, don't worry about it. I'm only using the [math]c=1[/math] trick to make the equations look simpler.So now spacetime may be visualized as just a simple 2D diagram, with the horizontal axis representing space and the vertical axis representing time:This is a diagram with two axes, so a point on the diagram is represented by two numbers, [math]t[/math] and [math]x[/math]. We collect them both into one object called a vector, which is written like so: [math](t,x)[/math]. So for example the point at the origin of the axes, with [math]t=0[/math] and [math]x=0[/math], will be [math](0,0)[/math].What is the distance between two points on this diagram? The answer turns out to be a bit tricky. You might remember that in normal (Euclidean) space, the distance between two points is given by the Pythagorean theorem. In more technical terms we say that it's the magnitude of the vector connecting the two points. The magnitude of the vector [math](a,b)[/math] is [math]\sqrt{a^{2}+b^{2}}[/math] as can be seen in the following diagram:However, in the case of spacetime, which is not a Euclidean space, it turns out Pythagoras got a bit confused and now we need a minus sign instead of a plus sign:Next we're going to use this weird notion of distance to define something called proper time. Your proper time is just the time measured on your wristwatch as you move around. It will generally be different from the time as measured by someone sitting still, due to time dilation. We label the proper time with the Greek letter [math]\tau[/math] (tau) and define it as follows:[math]\Delta\tau=\sqrt{(\Delta t)^{2}-(\Delta x)^{2}}.[/math]These [math]\Delta[/math]'s mean "difference". So the difference in proper time [math]\tau[/math] is the square root of the difference in time [math]t[/math] minus the difference in space [math]x[/math]. In other words, it's just the magnitude of the vector [math](\Delta t, \Delta x)[/math] as calculated with the version of the Pythagorean theorem in which Pythagoras was a bit drunk.This square root is a bit alarming, though: as you probably know, we can't have anything negative inside the square root, or else bad things will happen! Thankfully, relativity comes to the rescue. First, let us answer the following question: what is the velocity of a particle? It's just the derivative of position [math]x[/math] with respect to time [math]t[/math]:[math]v=\frac{\mathrm{d}x}{\mathrm{d}t}.[/math]What do the [math]\mathrm{d}[/math]'s mean? They're just differences, like the [math]\Delta[/math]'s we used in the definition of proper time. So let us write instead:[math]v=\frac{\Delta x}{\Delta t}.[/math]Now, what is the highest velocity a massive particle can achieve, according to relativity? It can get arbitrarily close to the speed of light, but never faster. But we said before that the speed of light is just [math]1[/math]. So the most extreme scenario we can have (if we're so close to the speed of light that we can't tell the difference) is[math]\frac{\Delta x}{\Delta t}=1.[/math]Multiply both sides by [math]\Delta t[/math] and we get:[math]\Delta x=\Delta t.[/math]This means that[math]\Delta\tau=\sqrt{(\Delta t)^{2}-(\Delta x)^{2}}=0.[/math]So in the worst case scenario, the thing inside the square root is just zero. It cannot go below zero because that will mean that the particle is moving faster than light! While considering this seemingly technical point, we actually also discovered an interesting fact: a particle moving at exactly the speed of light has zero proper time. But we won't be concerned with this since we are dealing only with massive particles, and those can never ever achieve the speed of light.The next step is to define the spacetime velocity of the particle. This is usually called 4-velocity (since spacetime is usually 4-dimensional) but in our case we'll have to call it 2-velocity. The space velocity [math]v[/math] we defined above will be called 1-velocity.Why do we need two velocities? Well, the 1-velocity tells you how fast you're moving in space per unit time. This is useful in the old and boring Newtonian mechanics, but not so much in relativity. The reason is that, as we've already mentioned, space and time themselves get mixed up, contracted and dilated. We need some concept of velocity that will take that into account. This is the 2-velocity.We define the 2-velocity in spacetime in the same way we define the velocity of a vector in space: it's the time derivative of the individual components of the vector. In the case of spacetime, the components are [math]t[/math] and [math]x[/math]. Taking the derivative with respect to [math]t[/math] doesn't make much sense as it's actually one of the components. This is exactly why we defined the proper time: it's a notion of time that takes into account both time and space! So we define the 2-velocity [math]\mathbf{u}[/math] as follows:[math]\mathbf{u}=\left(\frac{\mathrm{d}t}{\mathrm{d}\tau},\frac{\mathrm{d}x}{\mathrm{d}\tau}\right).[/math]Note that [math]\mathbf{u}[/math] is bold because it's a vector. Okay, this equation looks a bit complicated. But all it means is that the first component measures movement along the time coordinate and the second component measures movement along the space coordinate.Now, what can we do with the 2-velocity? A lot! For starters, let's consider a particle at rest. That means its position in space is not changing. A derivative is the measure of change. So the derivative of [math]x[/math] must be zero:[math]\frac{\mathrm{d}x}{\mathrm{d}\tau}=0.[/math]What is the proper time? Again, if [math]x[/math] is not changing then the difference [math]\Delta x[/math] between two points will always be zero: [math]\Delta x=0[/math]. The proper time is therefore:[math]\Delta\tau=\sqrt{(\Delta t)^{2}-(\Delta x)^{2}}[/math][math]=\sqrt{(\Delta t)^{2}-0}[/math][math]=\Delta t.[/math]In other words, [math]\Delta\tau=\Delta t[/math] and therefore:[math]\frac{\mathrm{d}t}{\mathrm{d}\tau}=\frac{\Delta t}{\Delta\tau}=1.[/math]The 2-velocity for a particle at rest is thus:[math]\mathbf{u}=\left(1,0\right).[/math]That was easy! Okay, so we found out what the 2-velocity is for a particle at rest, and it turns out that it's not zero. What does that mean? Well, recall the definition of the 2-velocity. The first component measures movement along the time coordinate and the second component measures movement along the space coordinate. So a particle at rest does not move along the space coordinate (as expected), but it does move along the time coordinate.Let us reiterate this important conclusion: A particle at rest in space still moves in the time direction in spacetime. It doesn't need any energy to do so.This basically answers the question, but we can play with the 2-velocity a bit more to try and understand what it actually means. Naturally, we are interested in calculating the 2-velocity for particles that are not at rest. Their velocity may be anywhere between [math]0[/math] (rest) and [math]1[/math] (speed of light), but it cannot be exactly [math]1[/math] since massive particles can never travel through space at the speed of light.I'll save you the details of the calculation, since they are a bit messy. I'll just quote the final result. In the general case, the 2-velocity is:[math]\mathbf{u}=(\gamma,\gamma v),[/math]where [math]v[/math] is the 1-velocity and [math]\gamma[/math] is the Lorentz factor, defined as follows:[math]\gamma=\frac{1}{\sqrt{1-v^{2}}}.[/math]If we plug in [math]v=0[/math], i.e. a particle at rest, we get [math]\gamma=1[/math] and therefore [math]\mathbf{u}=\left(1,0\right)[/math] which is the 2-velocity for a particle at rest we calculated before. So this result might seem weird, but at least it's consistent.A plot is worth a thousand equations, so here's a plot of the two components of the 2-velocity as functions of the 1-velocity:What does this mean? The blue curve is the component of the 2-velocity along the time direction and the orange one is the component of the 2-velocity along the space direction. We start at 1-velocity [math]v=0[/math], i.e., at rest in space. This gives us spacetime velocity only along the time direction. As we increase the 1-velocity, both components of the 2-velocity also increase. As the 1-velocity approaches the speed of light [math]v=1[/math], both components of the 2-velocity approach infinity (this is the point that they both seem to converge to at [math]v=1[/math]).The interpretation is as follows: no matter what your 1-velocity in space is, when you consider your 2-velocity in spacetime you find out that you must always have some velocity "through the time dimension" in addition to velocity "through the space dimension".Let's finish with something cool. We will try to understand time dilation in terms of movement through spacetime. Intuitively, the velocity at which you "move through time" must tell how fast time passes for you, compared to an observer at rest. The plot above shows that the faster you move through space, the faster you move through time. If you're at rest, you move through time at velocity [math]1[/math]. So you experience time the same as any other observer at rest.Now you start moving, and your velocity through time increases. When your "time velocity" is [math]2[/math], you move twice as fast through time as an observer at rest! This means that for every second that passes for you, two seconds will pass for an observer at rest. This is exactly what time dilation is! (Indeed, the [math]\gamma[/math] factor that we put in the first component of the 2-velocity is exactly the factor for time dilation.)In summary:1. "Velocity along the time dimension" is a well-defined quantity: it's the time component of the 2-velocity.2. You do not need any energy to "travel through the time dimension": your velocity along the time dimension is always greater than or equal to [math]1[/math], whether you want it or not.3. The velocity along the time dimension tells how fast your clock ticks as compared to an observer at rest; it's the thing responsible for time dilation.