Then you're getting it the wrong way round. However much he sees, the amount he would expect to see is different. His inexpert, untrained eye, backed up by his highly fallible intuition, can detect the exact amount of rebar that should be left lying around after the collapse of a 110 storey building, estimate the exact distance the perimeter columns should be thrown, and gauge the type and extent of the dust clouds that should be generated, and in every case it turns out to be different! How can the Government's scientists have missed the fact that the collapse of the Twin Towers didn't progress in exactly the way that an uninformed anonymous Internet poster's wild guesses say that it should have? It's as obvious as the fact that the hole in the ground in Shanksville wasn't exactly the shape it should have been, the hijacks didn't take place at exactly the right number of minutes after the planes took off, the FBI took the wrong number of days to release the names of the hijackers, and every other example of the events of 9/11 not going exactly as one person's guesswork says they should have. After all, this is the truther scientific method in action; make a vague guess how things ought to go, note that they didn't go like that, then throw a tantrum and demand another investigation because the world doesn't correspond to their fantasies.
Dave