Why do some circuits work the first time and some circuits take over a year and multiple design iterations to work properly? Why can, for some circuits, the produced quantities easily be ramped up, and for others both circuit and process optimisation is needed. Why are some circuits running red-hot requiring expensive cooling solutions while other circuits , for similar performance, are running from small batteries in hand held gadgets? Why do some companies make money with successful innovations and why do some companies loose hundreds of millions of dollars of revenue just because they did not get their product on market in time.