dave.cragg at lacscentre.co.uk
Wed Nov 12 19:26:20 CST 2008
> It would seem that resetting the randomSeed each time you use the
> random function would only have a 1-in-4,570,422 chance of getting
> the same seed as the previous run, no?
Yes, but the chances of having the same seed as any of teh previous
runs becomes progressively larger. Is it not a bit like the shared
birthdays in a classroom. It only takes 23 people gathered in a room
to make the chance of two of them sharing a birthday more than 50%.
From my probably poor calculation, I think if you ran your randomSeed
algorithm about 2500 times, there would be a 50% chance that the same
randomSeed had been chosen at least twice. (At 4000, I think the
chance is over 80%) In many situations, I think a repeated sequence
would be worse than a biased sequence.
A long time since I did this kind of thing, so apologies if I have
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