The arithmeticThe math behind the wasteyield-arithmetic0 pt4 pt8 pt12 pt16 pt−1.0 pt1 mountyield 99.0%−3.9 pt4 mountsyield 96.1%−7.7 pt8 mountsyield 92.3%−14.9 pt16 mountsyield 85.1%Binomial arithmetic at a 99% per-mount yield — set your own number; this is not a measurement of yours.The lever is upstream: a part characterised before it was bonded stops consuming the package, not just itself.At a 99% per-mount yield, sixteen mounts cost the package fifteen points — arithmetic, with your number as the input.The lever is upstream: characterise earlier, bond fewer failures.A package lost to one bad die is worth more than the die.Lumicule