He's an engineer. He probably was thinking about all the ifs and "but technically this is quite exactly like that" of each one of the statements he was making.

He's an engineer. He probably was thinking about all the ifs and "but technically this is quite exactly like that" of each one of the statements he was making. I often go to conferences to demo my project and I have the same habit. I try to explain the positive of my project but I know all the dirty secrets ;p