Troyes Reroll

[teasel]

is there anything wrong with the reroll routine on troyes? i've lost count of how many times i have seen a 1 reroll into a 1,now some people think it's just bad luck but one time i was able to do so 5 times in a row... and when something like that happens it's really hard to point the finger at "luck"

[Phelan]

Unfortunately, randomness( what you call luck) in computer software is pretty hard to test.
"1 1 1 1 1 1 1 1 1" could be either a fault in the algorithm, or a perfectly valid sequence of rolls, and you'd have no way of knowing.

There was previously a player complaining about the randomness of rolls in "Can't Stop" (you can search for the thread), and from what I remember, BGA said the randomness used was from a standard library function, which means it is used in most software.

So it should be fine.

You can read more about it: http://en.wikipedia.org/wiki/Random_number_generation

[beri]

I've had the same kind of unpleasant conescutive rerolls at Troyes, with at least four 1 in a row.

So there must be something up there making it go wrong.

[Speusippus]

It is definitely possible to test this. A single string of five 1's may not mean anything. But an examination of every roll over a large number of games could be used to see if the rolls are close enough to being truly random.

[Phelan]

I've had the same kind of unpleasant conescutive rerolls at Troyes, with at least four 1 in a row.

So there must be something up there making it go wrong.

In the previous thread( can't stop dice are not random):

Hello,

I confirm that dice are totally random. It is using the PHP function "mt_rand(1,6)".

Cheers,

As for

It is definitely possible to test this. A single string of five 1's may not mean anything. But an examination of every roll over a large number of games could be used to see if the rolls are close enough to being truly random.

Note that I didn't say impossible, I said pretty hard. Random.org, a site that uses truly random numbers instead of the pseudo-random numbers that are used in most software, has a pretty interesting section on how to test random numbers. It is pretty hard.
For most purposes, the PHP random function works perfectly well.