Quote 1: "A complex system that works is found to have invariably evolved from a simple system that worked. . . .A complex system designed from scratch never works and cannot be made to work. You have to start over, beginning with a working simple system." (John Gall, Systemantics,p. 80, 1978 paperback edition).
Quote 2: "In architecting a new [software] program all the serious mistakes are made in the first day." (Martin, 1988, cited in Maier & Rechtin, The Art of Systems Architecting (3rd ed.), p. 399)
Quote 3: "Indeed, when asked why so many IT projects go wrong in spite of all we know, one could simply cite the seven deadly sins: avarice, sloth, envy, gluttony, wrath, lust, and pride. It is as good an answer as any and more accurate than most." (me, testifying before the Subcommittee on Government Management, Information, and Technology Hearing, US House of Representatives, June 22, 1998)
My pre- and post-launch analysis of the Healthcare.gov website can be found here. ..bruce..