Originally Posted by
bookworm
You've said that twice now, but I'm still waiting for an example where that instant, final, unforgiving judgment was passed on the design of the approach rather than its execution.
The devil is usually in the execution (perhaps an appropriate choice of word in this case?). Sadly arguing about whether they crashed because of a failure in the design of a homemade approach, or its subsequent execution, doesn't change the fact that they're now dead.
There are plenty of examples of a badly executed approach where disaster has been averted only because of the additional safeguards built into operating in a properly regulated and controlled environment.