"There's only one endeavor in which you can start at the top, and that's digging a hole."
- Author Unknown

"That statement is entirely not true.  For example you can start at the top of an ice cream cone, the top of a list, etc.... (besides who said holes are vertical... when I was a kid we dug sideways holes in the sand piles - yeah we called them caves, but it qualified as a hole.)"
- Arthur Unknows