Digression Alert. Way back at #3614 and 3615 there's passing reference to Nevil Shute Norway. He co-designed R100 airship and the Airspeed Oxford, an important aircraft of WW2. In his autobiography Slide Rule he admits to keeping Airspeed afloat by dubious valuation of part-built aircraft. "I was acquiring a reputation for reckless and unscrupulous optimism that bordered on dishonesty". Likewise Boeing?