What a delightful followup. I just found out about "7 minutes in Heaven", but as it's described on the WWW, I'd hazard a guess Ken Jennings could in principle

What a delightful followup. I just found out about "7 minutes in Heaven", but as it's described on the WWW, I'd hazard a guess Ken Jennings could in principle find himself dethroned simply by current technologies with copious amounts of reinforcement feedback (and letting Honda iterate a bit on the implementation). Conquering Calvinball seems like it's going to require at least 810 and probably quite a bit beyond that.