Bill3 they lose interest after a few minutes. I think his family is a little too polite in telling him " That's very nice but why don't you put that away for a few minutes." He does have Aspergers (I have it too but if I did anything like this my mom will tell me you need to change the subject or the iPad would be on a time limit) and I think they are afraid of upsetting him or they just don't get that you can tell him no. He will be upset but he won't throw a fit. He monologues and usually when we are with my folks we keep better tabs on him. Usually we will distract him by asking him to do something and when he does it on me sometimes I tell him I'm preoccupied, but I think his family doesn't get that they don't have to deal with it and ignoring it only encourages that behavior