You are a Project Engineer on a satellite that

watches the plumes of Russian test rockets. You are

asked to do a reliability analysis of a redundant computer

system for a similar application. Using the approved

reliability figures available, you develop a technique for

handling the redundancy. Your analysis yields one

million hours MTBSF (mean time between system

failures). No one questions the method or the estimate.

You use the method responding to an RFP, knowing that

the failure of power including backup is much more

likely than that. Eth ical?