[SocialWelfareIV]

The problem is that sets, two pair, etc....they're all cracked from time to time.

You're still going to have to make marginal decisions if you know the whole board in advance. What are you doing if you know you're going to flop top pair with your AK (even on a non-scary board)? What happens when you have a tough decision to make on a check raise? Does your opponent have a set or a raggedy two pair?

You make a set, what 25% or so of the time by the river? And you have a pocket pair about 5% of the time. So you're talking about playing 1.3% of hands for sets, some of which are going to be cracked.

In poker, there are three things that you don't know: the cards that are coming, the cards that your opponent has, and what your opponent will do. If you know what your opponent has, you also know with great likelihood what your opponent will do. And even if you don't know what cards are coming, you understand what the probability of these cards coming is. You should NEVER make a mistake under these circumstances. Whereas, just knowing the board cards, you will inevitably make mistakes.