The absence of a good argument that a technology will not happen is not a reliable basis for expecting it to happen, and this is not how the world or technological development works.

“These were people who generally were not thinking about it in that way. We're just thinking, yeah, this stuff is going to happen because I can't think of a good argument that it definitely won't, which is not how the world works and not how the development of technology works. And oftentimes there were good arguments that these things won't happen and they were just ignorant of those arguments.”