"VIDEO IDEA : random numbers. You cant tell computer to just pick a number at random. How does <a href=""http://random.org"">random.org</a> stimulate that? how do other programs do that?",(reply>)," Done:  <a href=""https://www.youtube.com/watch?v=1cUUfMeOijg"">https://www.youtube.com/watch?v=1cUUfMeOijg</a>",(reply>), @Peter Auto<br>How you choose the seed doesn't change whether the sequence is random or not. Timestamps (usually the number of microseconds since your computer has booted up) are often used as an RNG's seed simply because they're harder to predict, but given the same seed, the sequence will always be the same. That means that for any given seed, the RNG does not have a uniform chance of choosing any number; it has a 100% chance of choosing a predictable number. That's why they're pseudo-random, not truly random.,(reply>), +IceMetalPunk There are two standard methodes for random numbers. 1st you can use every time the same seed to generate a pseudo random number. The 2nd is that the computer uses the timestamp as seed. both have advantages and disadvantages.There is also a defintion for pseudo-random, but at the moment there are no proofs if there are really pseudo-random numbers.,(reply>), Most of the time it's just pseudo-random: given the same seed, you'll get the same sequence, and given any seed you can predict that sequence. However," <a href=""http://random.org"">random.org</a> claims to simply convert local atmospheric conditions into numbers", and these almost unpredictable minor changes in wind velocity, air pressure, etc. supposedly create more randomness. Whether that means they're uniformly random or not I couldn't tell you... I think a Tom Scott/James Grime collaboration would be able to finish my answer.