Assumptions
Wirb, #702 "Flaws that we can train out ..."
This is a gross assumption considering all of the challenges in modern aviation.
James Reason provides a more balanced view, in that the "human condition is difficult to change, but changing the working conditions can be more effective and often easier".
In particular by avoiding opportunity for combination of factors, e.g. its difficult to 'train out' a bounced landing, but the thrust control system could be improved to cover a greater range of situations with the same procedure.
The principle is to reduce complexity, aid consistency, and thence reduce training and documentation costs. Aim to reduce the need for the the human to detect and differentiate between situations or remember alternative procedures.
Similarly, in your #680; whereas technology should reduced workload you resort to workarounds to counter system deficiencies, introduce additional checks (FMA SOPs), place greater demands on human attentional resources, and thus with higher workload challenge the human ability (time) to appreciate what the aircraft altitude, speed, and thrust levels are.