Amateur professionalism
（重定向自ProAms）
Amateur professionalism or professional amateurism (shortened to pro-am) is a socioeconomic blurring of the distinction between professional and amateur within any endeavour or attainable skill that could be labelled professional in fields such as writing, computer programming, music or film. The idea was used by Demos, a British think tank, in the 2004 book The Pro-Am Revolution co-authored by writer Charles Leadbeater. Leadbeater has evangelized the idea (in "amateur professional" order this time) by presenting it at TEDGlobal 2005. The idea is distinct from the sports term "pro–am" (professional–amateur), though derived from it.