[possibility]

On reflection, perhaps this pointless diversion yields the following maxim:

  You can walk into a house through an open door,
  but you can't walk into a computer.

[tptacek]

You can totally walk into a computer. I've done it. Hurts.

[possibility]

The only machine around here that I could totally walk into is an S/390, but oddly enough I don't have the key to its bedroom.