The computer lags, it may take several seconds for it to take into account an action on the mouse. And of course as time between the child reconsolidated it can last longer. Software can be downloaded for "add" content (the computer reminds the child at the end of each story is fascinating) and learn the child's name to the machine (understand that 1% of "my friends" are replaced by something that vaguely resembles the name). By cons for the contents he is not an addition but a replacement. One can only have one song, one story at a time (it's true that in 2014 the memory is expensive ...) In short, go your way if you are looking for something vaguely sympathetic