Question for Mr. Sklansky

[CrazyAce]

I was perusing the 2+2 archives and came across your Top 10 Smartest Non-Poker Players thread and at the end of your post you add:

"Everyone on this list, if they devoted two years to learning poker, could successfully cross book with either Chip Reese or Phil Ivey at a full table multiple game format as long as seven card stud or pot limit holdem was not one of the games."

I'm interested in hearing why you made those two exceptions (7 stud and PLHE).

The question is addressed specifially to David, but I would love to hear other opinions.