 You know, and you, every time I listen to you, I learn something, and I'm just amazed. You know, it's nice to have mentors that, you know, you can look to that are experts in their field and aren't always going to blow smoke up your kilt. I just really would like to sometime discuss, or have you discuss as a dissertation, the difference between activated charcoal, regular charcoal, biochar, and because...