The speaker considers removing the entire silicon substrate and placing power lines on the backside to have been a far-out idea even in the 1990s.

“... about these type of things. Backside power, that one's pretty out there. Uh, I think even in the, in, in the '90s, the idea that you're gonna strip off the entire silicon substrate and put lines on the ba- backside, uh, you know, that one is probably, uh, you know, something that's a little bit out there.”