Greenfield frequently lectures about the future of the brain and, in particular, the effect that computers are having in the way we think. She says that computer could be very useful for old people because it keeps their minds active. On the other hand she is worried that young people are using computers too much. Although activities such as video games are good for developing certain skills (such as quick reactions), there are many other skills that we need in life (such as the ability to communicate with people and understand other people’s emotions) that they do not teach us.