"Initially, I wanted to build a very light camera, from 2 to 3 kg, loaded with a minute of film, mounted on a system of cranes and pulleys, with mini engines. She could have flown over the streets of Manhattan, drifting over passersby and reaching a speed of 60 km / h. But production was certain that we would lose control and kill people! So we tried lots of other things that did not work, like stuntmen hanging from cables, but they had neither the grace nor the acrobatic agility of Spidey. Then John Dykstra, the head of visual effects, proposed a virtual Spidey. I did not like this idea, I did not think I could convince the public with a virtual human, it would not be real enough. But at the point where we were, we tried. And it works. But because Spidey is wearing a suit. If it had been necessary to create skin or virtual eyes, nobody would have believed it."
January 1, 1970
https://en.wikiquote.org/wiki/Spider-Man_(2002_film)