｢ IMO, the #Mars #Pathfinder problem was caused by the over-removal of asynchrony - true #concurrency - from the problem and replacing it by step-wise simultaneity, then mis-labelling this approach as “concurrency”. This led to the problem that Facts were ignored. The bug was encountered - apparently “randomly” - before launch, but, ignored. The use of the function-based, overly-synchronous paradigm caused an unforeseen gotcha, but, it looked liked a random Act of God, and was, thus, ignored ｣