[tzahola]

>I think the point was that for a 40 people club odd are very very poor that two people would have the same name.

Wrong. For example I have exactly the same name as my father and we're members of the same squash club.

[twic]

I don't have exactly the same name as my father, and we are not members of the same squash club. So, in the sample so far, there's only a 50% chance of that happening. I suspect that if we enlarged the sample, it would fall much further.

A single counterexample does not falsify the theory that the odds are very very poor!

[Dylan16807]

We're interested in the odds of collision of people in the same club. Any data about people not sharing a club is irrelevant.

> I suspect that if we enlarged the sample, it would fall much further.

Try to back that up, maybe.