Example:

Another example is the dietary habits of a creature who eats only grapes, cheese or lettuce, and whose dietary habits conform to the following rules:

It eats exactly once a day.

If it ate cheese today, tomorrow it will eat lettuce or grapes with equal probability.

If it ate grapes today, tomorrow it will eat grapes with probability

**1/10**, cheese with probability

**4/10**and lettuce with probability

**5/10**.

If it ate lettuce today, it will not eat lettuce again tomorrow but will eat grapes with probability

**4/10**or cheese with probability

**6/10**.