The Optimum Number....

.....of bikes is current number (n) + 1. The resultant sum increased today.

Earlier I heard an amusing joke on the radio. A man walks into a Star Wars themed restaurant and asks for a Wookie steak. He eats the steak with clear enjoyment but takes a long time to do so. On clearing his plate, the waiter asks if the customer has enjoyed his meal. "It was very nice, but a little Chewie".

Titter.