Hey verneer, sweet post. One minor disagreement about your stats post. In some cases we can get reliable reads after less than 100 hands. This has already been discussed to some degree. But in general, it seems that it would be much less likely that 'PkrPlayer' is going to evolve into some sLAG after those first 50-100 hands.
Sure, I guess your message is that we might be wrong about a player after less than 500-1000 hands, but we never have absolute certainty. When we have to decide at the table whether this guy who is 8/8 over a small sample is likely to be stealing from the CO or simply raising with a good hand, it makes more sense to assume he isn't betraying his stats *much* over a moderate sample. Sure, we can be wrong, but that's poker right?
In short, some "instareads" are more reliable than others. Classic thread (warning: math) for those who haven't read it:
http://archives1.twoplustwo.com/show...age=37&fpart=1