[stephc_int13]

This is because we tend to use a human-centric reference to evaluate the difficulty of a task : playing chess at grand master level is a lot harder than folding laundry, except that it is the opposite, and this weird bias is well known as Moravec’s Paradox.

Intelligence is the bottleneck, but not the kind of intelligence you need to solve puzzles.

[mdaniel]

For others who also hadn't heard of that: https://en.wikipedia.org/wiki/Moravec%27s_paradox