Is he [a New York stocks trader] motivated by greed? "Definitely. Do I
have any existential or moral issues with that? I don't. We're not
seeking to improve the state of technology -- we push the envelope to
seek profit. The way I redeem it is seeing the benefit it has for my
child and my wife."
-- Andrew Smith. "Fast money: the battle against the high frequency traders,"
The Guardian (Jun 6, 2014)
http://www.theguardian.com/business/2014/jun/07/inside-murky-world-highfrequency-trading