Patio Problems

Ray was attempting to build a patio for the first time. He bought 100
cement blocks. Laying them out in a pattern, he discovered the chosen
area was too small.

He stacked the blocks against the house and cleared more space. The next
day Ray put the cement blocks back down, only to find that the ground
was too hard to keep the patio level.

He ordered a truckload of sand to be delivered the following morning.
Again he stacked the 100 blocks against the house.

Observing all this, Ray's next-door neighbor asked, "Ray, are you going
to put your patio away every night?"