Not that stars that you get at the end of the races. But you can get up to 6 stars (I believe) and they show up in the upper left portion of the screen. What do those do?
In the top left corner of the post-race menu, there is a prompt to press + to add (or remove) one star out of six. What do these stars do?
Pass PHP variables to Javascript/jquery Probability that median falls within a range? If I draw 5 samples from a distribution that is cont., what is the probability that the median of the population is between the xmin and xmax of the draw samples?  What is the formula to apply here? url completion in cartoDB info windows Convert hex string to int in Python How do I convert a hex string to an int in Python?   I may have it as "0xffff" or just "ffff". I have been assigned this problem for homework:     Show that, if $a &lt; b + \epsilon$ for every  $\epsilon \gt 0$, then $a\le b$.   I have tried to go about this using Induction, but I don't know what the base case would be. It is obvious to me in my mind, but I don't know how to put it into mathematical terms on paper. any hints? What is the best, easiest, preferably cheapest way to make OS X write to NTFS-formatted drives in Mac OS X? How to avoid the 'not properly formatted as code' alert Add Point to Plot3D Current measurement maximum time On my multimeter I have two current measurement connection. One for the mA and one for the A.  On the ampere one there's a time limitation but not on the mA one. Also they mention in the manual a kind of "cooldown time" after the measurement for the A one. So, basicaly, probing with this input can really slow down my project. (max 15 sec every 5 minutes)  My question is, I have to switch to that A one for a 600-700mA current (mA input is 500mA), as it's not a "big" current, can I bypass this limitation ? Is it design for higher current only or any measurement done on that input ? It's a middle-end multimeter but even the online datasheet is not complete about what. (Was excepting a kind of measured current/cooldown time graph) Hiding reputation and encouraging thinking time would improve the quality of answers on SO I've only been a member of SO for a couple of months but I must say that the site can be a bit daunting even for an experienced developer.  Part of this is because when users with very high reputations answer questions then it seems that everyone assumes that they have the right answer.  I don't want to go into the self-fulfilling nature of reputation increase for high reputation people.  But I think it is clear that people with high reputation scores get more upvotes () because people assume (usually accurately) that they are correct.    But if reputation was hidden on SO, at least for, say, the first hour after a question is asked then the probability of the best answer being upvoted the most would surely increase.  This might also require the hiding of the names of the answerers if they have very high reps!  As a second method of getting improved answers I would correlate the value of an answer (in terms of reputation gained) with the difficulty of the question.  And the simplest way to do that would be based on the time required for the question to be answered.  So if a question is answered within a minute then it is a 20% question (2 points per upvote), within 2 minutes a 40% question, within 5 minutes a 60% question and so on, on to say a 200% answer (20 points per upvote) on questions that have been hanging around for months.  This would encourage considered answers to new questions and tempt people into reducing the backlog - rather than encouraging people to sit on the 'newest questions' hoping for a gimme.  These two measures would incentivise people to answer the questions that no-one likes the look of and reduce the relative value of answering easy questions. let a,b be real  numbers and $\varepsilon&gt;0$. prove the above inequality. I dont know how to even start. please, I need your help. Is Angular Momentum truly fundamental? This may seem like a slightly trite question, but it is one that has long intrigued me.  Since I formally learned classical (Newtonian) mechanics, it has often struck me that angular momentum (and generally rotational dynamics) can be fully derived from normal (linear) momentum and dynamics. Simply by considering circular motion of a point mass and introducing new quantities, it seems one can describe and explain angular momentum fully without any new postulates. In this sense, I am lead to believe only ordinary momentum and dynamics are fundamental to mechanics, with rotational stuff effectively being a corollary.  Then at a later point I learned quantum mechanics. Alright, so orbital angular momentum does not really disturb my picture of the origin/fundamentality, but when we consider the concept of spin, this introduces a problem in this proposed (philosophical) understanding. Spin is apparently intrinsic angular momentum; that is, it applies to a point particle. Something can possess angular momentum that is not actually moving/rotating - a concept that does not exist in classical mechanics! Does this imply that angular momentum is in fact a fundamental quantity, intrinsic to the universe in some sense?  It somewhat bothers me that that fundamental particles such as electrons and quarks can possess their own angular momentum (spin), when otherwise angular momentum/rotational dynamics would fall out quite naturally from normal (linear) mechanics. There are of course some fringe theories that propose that even these so-called fundamental particles are composite, but at the moment physicists widely accept the concept of intrinsic angular momentum. In any case, can this dilemma be resolved, or do we simply have to extend our framework of fundamental quantities? How fast does gravity propagate? Why is there a difference between ping "localhost" and ping "local IP address"? Using cmd and ping on Windows gave me the following results:   Pinging "localhost":       Pinging "192.168.0.10" (local IP address):     Aren't both situations exactly the same?   I mean, I'm pinging the same interface, the same machine and the same address. Why do I get such different results?  EDIT: Here is my ipconfig /all screen: Does a wing in a potential flow have lift? Learning Insertion Sort in Ruby I have just started the MIT Introduction to Algorithms course through the material posted online. Along with the course I have also decided to learn/enhance my Ruby skills by coding the algorithms in it.   I am on the first algorithm given, which is Insertion sort, and I have the following code typed up but I am getting this error when I run it:     insertionsort.rb:5:in `>': comparison of Fixnum with nil failed (ArgumentError)   def  insertionsort(num) for j in 2..num.length     key = num[j]     i = j - 1     while i &gt; 0 and num[i] &gt; key         num[i+1] = num[i]         i = i - 1     end     num[i+1] = key end  puts num end  numbers = [23,34,46,87,12,1,66]  insertionsort(numbers)   I'm sure it is a fairly basic problem but I just can't grasp what it is at the moment. Any  help or tips would be very much appreciated. Deriving Heaviside-Feynman formula for the electric field of an arbitrarily moving charge from Lienard-Wiechert potential Do rogues get sneak attack damage added to attacks made outside their turn? PHB says 'once per turn,' so, it would seem that a Rogue with Sentinel, for example, could "consistently" deal Sneak attack twice per round (whether the enemy triggers an OA or the melee weapon attack provided by the Feat).  So, can rogues deal sneak attack damage with any weapon attack outside their turn? (obv. one that meets the standard requirements--finesse, adv or adj ally) Do Stack Exchange sites allow editing of comments and posts from other users? Seo: Change the title of a page Lets say my website looks like this:  News -Hello world -Foo -Bar  So the parent page will list the last 3 news messages. For each news message there is a sub-page. For the parent page I was thinking of setting the page title to: News - Hello world, Foo, Bar.  Now if somebody adds a new message the title tag will also change. I googled this and read a few blog posts where people said that changing the title actually hurts the ranking of that page.  So is this true? Should I just set a static title tag for all my pages?