I would say this is being negligent if it is generalized. Often times architecting a system involves meetings with multiple parties — stake holders , legal coun

I would say this is being negligent if it is generalized. Often times architecting a system involves meetings with multiple parties — stake holders , legal counsels, and months or years of planning ahead to give a proper estimate for a large system. Time and materials is the right way to do this. However I can see this working in a very small scenario.