Yeah, but, you know, even if you're doing something that you rehearsed ten times and you think you got it all figured out, you still get surprised when you actually get up there. The big one that I remember is on my second spacewalk. We're connecting this dish antenna and had to go on top of this big boom, like a big pedestal, and there was a connector that had an electrical connector, and we had like an hour or so to connect the thing, and without it connected, it wasn't getting any power or data to that antenna, and it could get too cold. And this gazillion dollar antenna could be a worthless hunk of junk. If you take too long, you're on the clock. Because when it was in the shuttle, it was plugged in, it was getting, its heaters were on, and now you got to plug it back in and get the heaters back on the. In a certain amount of time. And so we're like, okay, we plan this, we train this, we get up there and the connectors won't go together. It doesn't fit. And these two pieces of equipment sat next to each other for like a year in Florida in like a warehouse. And nobody ever thought, well, oh, maybe we should make sure this thing fits.