now of children who nare fairly persistent in their cross gender play, but are prepuber tal, only about to want to be transgender. 80% are not going to be transgender. what i would say to parents is that if your child is getting close to puberty or worse is already in puberty and is showing this kind of behavior particularly underwear wearing and saying i'm the wrong gender etc., then you need to get help for that child fast. that maybe calling your pediatrician and asking for a gender specialist to meet with your child because a child who is, according to the dutch and us a child who holds on to the belief that they are in the wrong body on the outset of puberty -- it is like pinocchio becoming a donkey -- they will take their life. these are the kids who are the real deal. charlie: over the series of three years, you and i found a range of things we have traced to the brain and understood. in some cases, what we understood about what was taking place inside the brain was large and some small. where do you put this in terms of understanding what is going on? eric: i think we are in the