Our society is constantly asking more of us- we want instant feedback and automatic updates. We want to do everything as quickly as possible, which causes us to multitask. There are some things we can do without thinking, like walking or eating, which hardly use any mental resources and is why we can walk and talk, or eat and read. The problem comes when we want to do two things that require more attention, like study with the TV on, or talk to someone and surf the web. In these cases, one (or both) of the activities will be affected.