This is taken straight from the documentation for srand 
Frequently called programs (like CGI scripts) that simply use

time ^ $$

for a seed can fall prey to the mathematical property that

a^b == (a+1)^(b+1)

one-third of the time. So don't do that.
I don't quite understand what the author meant, but this does not seem possible. Is this a mistake, or am I misunderstanding what is meant? 
Thanks,
 	Max

In reply to This may be more of a math question by Fingo

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