re: criticalthinking.org
caveat emptor (that's Latin for "obey the tie" ... no wait, that's
cravate imperator ... no, that's not right, either) ... well, anyway just be careful before you buy stuff:
I posted this a while back:
Courthouse News Service
I'm not opposed to the idea(s) of "critical thinking", but from what I can tell this group seems to be about trying to make ideas proprietary (by grouping them into (expensive) learning modules) that are freely available across the web.
And, as burnt said, there are other things we can do with our minds.