I was a member of the team that introduced Eurodollar and Standard and Poors futures at the CME. Later, I pioneered the secondary market trading of OTC interest rate swaps; and simultaneously managed MHT Futures, one of the first bank subsidiaries to clear futures. Today I teach a class, "The Economics of Market Technology," at Northeastern University. There, we analyze forces driving change in market practice. The SA articles stem from class discussions.