Beware the Birthday paradox

I wrote about this some time ago:<p><a href="http://www.solipsys.co.uk/new/TheBirthdayParadox.html?7511303" rel="nofollow">http:&#x2F;&#x2F;www.solipsys.co.uk&#x2F;new&#x2F;TheBirthdayParadox.html?751130...</a>