 In real estate in general, you underwrite deals, you build for the worst and you profit for the best. Because if you build for the worst, under a worst case scenario, you always have profitability. And so you have to think about these things. And the only way you learn this is by doing it. Yep. Instead of for a mentor, or both, the best thing you do is have a mentor that watches you do it. Yes. That's like jujitsu. I do jujitsu. The best way to jujitsu is you definitely have to have a mentor, nobody ever taught themselves jujitsu. You can't just intuitively go, well, okay, if I do it, because most of jujitsu is counter-intuitive. Yes. It's counter-intuitive. And then number two, on top of that, so you need a mentor. But if you only have a mentor talking to you on a podcast and you never actually go into the gym and compete, you're also not good.