* I think 5% chance of him finding a women attractive is too low. Physical attractiveness <i>could</i> be affected by him finding a girl that matches the other criteria.<p>* The equation doesn't take in to account the constant influx of new people in London. And who's to say she is of British nationality?<p>* More importantly, where does he state the chance of the 'chosen' one liking him? Further to this - and I don't want to generalise here - but in my experience, this is precisely the type of humour that women <i>do not find funny</i>.<p>Finally:
<i>"on a  given  night [..] out in London there is [..] a 1 in 285,000  chance"</i><p>Should this be <i>in a given instance</i>? I live in London and probably walk past 1,000 people every day. I know that's not a meaningful interaction but, using his variables, in a given day that means there's a 1 in 285 chance I walked past 'the one'.<p>Life is cruel. As someone else has said, hang out in some university bars and break the random sample.<p>EDIT: Grammar, spacing.