[It earns a slightly startled look out of the corners of his eyes, though okay, Tony can track the thought process. He's quiet for a moment as he works through what he wants to say, letting himself move on autopilot through the mostly-remember movements.]

It's different, with the armor. I built literally every piece of it, so I know exactly how it all works. But it's -- it's going to sound stupid, but it's just practice. Working with it over and over. I could probably build a new suit with my eyes closed and I still nearly took my head off a couple of times when I was testing it out.

[In retrospect, it's a little worrying how close he came to killing himself a time or two. Maybe he's just getting old. Mature. One of those.]

But no, nothing so organized. I was working on my own and I was driven enough to keep pushing through the concussions. Do that often enough and you just learn, I guess.