michael vassar: now that I know to look, evolution's limits are really obvious. A shark is not noticeably less complex than a dog. Evolution has been bumping along a glass ceiling since lancelets evolved into fish. The fact it took so long to get intelligence seems indicative to me that we humans exist by the incredible fluke of finding a kind of mind that could be squeezed under the punishingly low complexity limit. However, above you imply you disagree with Eliezer on this topic. I'm really interested to know why.