 The hardest thing to kind of master or like have command of is blitz protection, knowing where your hots are, sight adjustments, audibles, all that kind of stuff. Because if you don't know that, you're going to get hurt and your season will be cut short or your teammates are going to get hurt. You're going to get someone hurt. And obviously, like you can be so remedial and so not ready that that can happen on first and second down. Like we've seen that happen too. But no, that's how you – I think that's like the –