gazzaniga: maria, we've got a problem here. - you're the problem. - who invited him to this family? you're the problem. it's not your daughter, it's you. you've been compulsively managing this child for the last eight years. you've looked, you fold the laundry, you do everything. - you cook, you-- - tully: you soccer mom you. - ( laughter ) - gazzaniga: you are enormously controlling. it's not the child. back off. - you take the pill. - ( laughter ) tully: but look, parents have been making these decisions for their kids forever. if we wanna expand the conversation to this, it's not just about drugs. i think the problem's with maria. and this is the thing that's always overlooked in these child-parent interactions, anorexia nervosa and all the rest-- diller: i think that's unfair to maria, very much so. and i'm the one prescribing those medicines every day. there are a lot of societal forces pressuring maria, but the idea that somehow this is just bothering maria, not bothering the kid is a bit unfair. hockenberry: michael sandel, what would you do if you were in maria's shoes? and

gazzaniga: here's a real possible drug that's right on the cusp. and it's the drug that will selectively erase a memory. - so let's say you didn't like the year 1961. - ( laughter ) right? you just want that out of your life, or one guy put it to a colleague of mine, "i'm trying to forget my ex-wife," you know, call her name up and take the drug and boom-- delete character. now this is being worked on-- that's actually within the realm of feasibility from what we understand. that touches on some deep questions of what it means to have a life experience. you might meet her and marry her again. i mean, jeez. ( laughter ) or you might not propose the next time. - scary. - no, i think the most science-fictiony but conceivable possibility is i don't think that we're that far removed now, as the science progresses, from looking at compounds that are genuine cognitive enhancers-- not drugs that keep you up longer, not drugs that let you study longer, not drugs that simply remember all. but compounds that will literally make it possible for you to do thing