A lawyer, a doctor and an engineer have all been sentenced to
die for crimes that they have committed.

The Lawyer is brought up in shackles and placed in the
guillotine. The executioner pulls the lever to activate the
device and the blade starts to fall but jams. The Lawyer is
spared and released to go free.

The Doctor is brought up in shackles and placed in the
guillotine. The executioner pulls the lever to activate the
device and the blade starts to fall but jams. The Doctor is
spared and released to go free.

The Engineer is brought up in shackles and placed in the
guillotine. The executioner reaches for the lever to activate
the device and the engineer shouts, “Wait! Stop everything! I
think I’ve figured out your problem!”