In this chat with a coworker I comment on the current revision of this Wikipedia article on the Laffer Curve - involving economics (this was an offshoot of discussion about game theory, which is work-related ;) - I find, two paragraphs into the article:

(12:27:18 PM) Alex Hall: “..Critiques commonly point out that socialist states, such as the U.S.S.R., have been able to derive revenues at a 100% tax rate, though they would have derived more if tax rates had been lower.”
(12:27:35 PM) Alex Hall: Oh, good. I’m glad communists can get higher taxes from rates lower than one hundred percent.
(12:27:42 PM) Alex Hall: !
(12:27:45 PM) MoD: hehe
(12:27:49 PM) Alex Hall: Can you believe that?
(12:27:53 PM) Alex Hall: Ah, Wikipedia.
(12:28:18 PM) MoD: Probably has something to do with people earning more or something
(12:28:47 PM) Alex Hall: Maybe. I haven’t investigated that. I think I’ll go home and see if MY LIFE produces any MOTIVATION which might produce any TAXES.
(12:29:01 PM) MoD: hehe
(12:29:11 PM) Alex Hall: LOL what a joke.