If you can't recognise a stall you should not be flying. I take it you have never flown helicopters where the collective is your friend when things can go wrong very quickly.
In the case of AF447 three pilots could not read the information in front of them and must take the blame.
Have you never made an error or not followed SOP's,because of things outside your control or perhaps a belief it was the right thing to do given the circumstances ? Why they were in that position,why they made those errors, in the case of the AF or BA crews is the single most important issue.
Whether it's design,systemic,time pressure,fatigue,culture or automation,it must be the aim of ANY accident/incident investigation to find out why & mitigate against it happening again,rather than look for people to blame.Anything else is a complete waste of time/energy & is both practically & ethically unsound;Most importantly does little advance safety.