>Unless you seed the rand() function by using a negative number, like rand(-1), you will ALWAYS get the same series of values.


If I do:

?rand(1)
?rand()
?rand()
?rand()

I will always get the same values.

But when I do:

?rand(0)
?rand()
?rand()
?rand()

I always get different values.

So what's the difference between rand(-1) and rand(0)?