More dumb bridge ideas?

[barmar]

I'm not against the use of double dummy simulations. It is a ball park figure. It isn't the final arbiter of all disputes.

Sometimes DD will overstate declarer's tricks, because he always gets two-way finesse right, drops singletons, etc. But sometimes it will understate, because the defenders play perfectly as well, they never make bad opening leads like real players do. The theory is that these two factors cancel each other out, so the overall results approximate real play well enough.