Einstein once said that an hour talking to a pretty girl seemed to pass more quickly than usual. Time feels different depending on one’s level of attention/commitment.
Today’s invention is a computer system clock which knows, from one’s calendar and the applications in use, the kind of activities being undertaken at any point throughout the day.
It also has a record, made earlier by the user, of how boring certain types of activity are for that individual.
The clock then indicates subjective time -so that lunctime seems over in ten minutes and that 20-minute PowerPoint presentation by your boss seems to take an hour.