Failure modes Noises lead to failure modes (Fm) One set of noise values leads to fm Opposite set of noise values leads to FM, Simple problem solving chases the problem from FM, to FM, and back again, but does not avoid both fms with the same set of design values-endless cycles of build/test/fix(B/T/F) C Don Clausing 1998Failure modes • Noises lead to failure modes (FM) • One set of noise values leads to FM1 • Opposite set of noise values leads to FM2 • Simple problem solving chases the problem from FM1 to FM2 and back again, but does not avoid both FMs with the same set of design values – endless cycles of build/test/fix (B/T/F) Fig. 12 © Don Clausing 1998