the device companies, apple, microsoft and samsung, they made the hardware devices. they can make them work in any number of ways. instead of defaults built to enable app users to addict you, they could change the design to be about max mali empowering people and protecting people, a more humane approach and i think parents and kids will want this. >> concern is growing. especially when it comes to kids. and now even parents in silicon valley are spooked. >> okay. jesus, what do we go after 5? >> eight. >> eight. >> this is waldorf. >> we keep going. four. >> a school in the bay area where students are learning math not with calculators but with yarn. >> nine. very good. >> what are waldorf's guidelines