And we can define nice in a lot of ways. They're gentle. And a nice farmer is more likely to name and a nice farmer is more likely to get, it gets a higher yield. And the reason why this is a confounding variable, if you were to control for that, if you just take, well, let's just control for nice farmers and then see if naming makes a difference, it might not make a difference. If the farmer is petting the cows and treating them humanely and doing other things, it might not matter whether the farmer names them or not. Likewise, if you take some less nice farmers who hit their cows and they have really inhumane conditions, it might not make a difference whether they name the cows or not. And so it's very important that you, from the observational studies, you might, if they're well-constructed, you might be able to make a, you might be able to say there's a correlation.