I think that is too limited a measure of control - if you can use the iPad to do a budget, but not MS Excel, then with the iPad you can get an extraordinary amount of control over your own life.
Depending on what kinds of books his parents read those might result in more control too. Even if we account for a loss of control from the computer to the iPad (and I am not entirely convinced that a practical loss happens, given that they can barely use the computer) it isn't possible that the total amount of control, for his parents, go back up.
Depending on what kinds of books his parents read those might result in more control too. Even if we account for a loss of control from the computer to the iPad (and I am not entirely convinced that a practical loss happens, given that they can barely use the computer) it isn't possible that the total amount of control, for his parents, go back up.