Time is the most valuable resource owned by individuals. Indeed, the time available to an individual, being by essence limited, is an extremely scarce resource. One could argue that progresses in medicine contribute to increase the average lifespan, but it cannot be expended indefinitely. Time flies at the same speed for everyone. Time spent is gone forever and additional time cannot be borrowed or exchanged for another commodity. The physical and cognitive abilities of individuals also evolve over time, which means that time must be used carefully to ensure the completion of the important...
