If the ratio of compensation between lowest and highest paid in an organisation is move than X times, something is wrong. The value of X can be debated. This morning I'm grumpy and set X=20.
@liw and it turns out that you can inspire people to do a lot wtih X=1.5 :-) https://en.wikipedia.org/wiki/Pirate_code
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko