Five philosophers sit around a circular table.
Each philosopher spends his life alternatively thinking and
eating. In the centre of the table is a large plate of spaghetti.
A philosopher needs two forks to eat a helping of spaghetti.
Unfortunately, as philosophy is not as well paid as computing,
the philosophers can only afford five forks. One fork is placed
between each pair of philosophers and they agree that each will
only use the fork to his immediate right and left. The slider in
the applet below controls the amount of time that a philosopher
spends eating and thinking. Philosophers are depicted in yellow
when they are thinking, blue when hungry and green when eating.