Read the source code, and then visualize a few levels from Crysis or Metro 2033 in your head. While you render it, count the average Frames per second. Alternatively, see how quickly you can find the prime factors of every integer from 1 to 1000.

Which is to say... Humans in general have extremely limited intellectual power. instead of calculating things efficiently, we work by using various tricks with caches and memory to find answers. Therefore, almost all tasks are more dependant on practice and interest than they are on intelligence. So, rather then testing the statement "Eliezer is smart" it has more bearing on this debate to confirm "Eliezer has spent a large amount of time optimizing his cache for tasks relating to rationality, evolution, and artificial intelligence". Intelligence is overrated.