we had steve levy on a couple weeks ago, talking about the guys from google went to montessori and montessoriches you you are the directions, and that's been fun. and they teach that idea of, well, what happens if you push the button? push the button, find out. >> we have become sort of e-mail, twitter buddies simply because his book keeps showing up next to my book on amazon, and it's like -- >> yeah, his is "50 dangerous things you should do with your kids." >> children and fire! i can't imagine. >> and there has been an idea that chemistry sets, no, they're dangerous. >> oh, that's terrible. >> or power tools. no, my goodness gracious, we couldn't let children have power tools. that's how, properly supervised, you learn about a lot of things. >> exactly. growing up, my dad always had a workshop. they built additions to their homes and built houses and stuff. i learned how to do that and i got to be the one kid in high school that was left alone in the shop to build stuyt i'm doing that with my kids. showing them how to do that stuff. the chemistry set thing, it's horrible. there's only may