I have met many engineers, programmers, administrators, and others who have great imagination (I used to be one of them; sometimes I stray back into that fold). Ideas come to them, and they try those ideas. Sometimes, some of those brilliant ideas work right now in the system we are building. Often, however, that isn't the case. Poor odds don't deter these imaginative people. Close oversight is necessary; well, maybe not necessary, as there are other choices.