[[Nigel Tufnel of Spinal Tap is showing off his amplifier to a person, who varies.]]
Nigel: These amps go to 11.
Person: Is that louder?
Nigel: It's one louder.

Normal Person:
Normal Person: Why not make 10 louder and make 10 the highest?

Engineer:
Engineer: But 11 doesn't have any units. It's an arbitrary scale mapping otuputs--
Nigel: Zzzz

Smart Engineer:
Smart Engineer: For $2,000 I'll build you one that goes to 12.

{{Title text: Wow, that's less than $200 per ... uh ... that's a good deal!}}