Does this not just illustrate the lack of improvement in project management?
Whichever way you look at it, industry should be far more adept, efficient, and commercially astute at bringing these projects to the market on schedule, on cost, and with fewer teething problems.
When ever new aircraft projects are announced they seem always to be 'rushed' into service. This is not chewing gum you are trying to sell.
Hasn't flight safety improved over the years? Despite greater pressures, bigger and more complex equipment, and larger passenger numbers, flight safety has improved over the past 30 years. Why hasn't aircraft production/design?