[VBprogrammer]

> before reverting to a perfectly capable parallel system of manual trim

I don't have time to read the article in detail at the moment but suffice to say that this is subject to considerable debate.

[Filligree]

Suffice also to say that, under heavy aerodynamic load, manual trim requires enough physical force to be the next thing to impossible.

[me_me_me]

Correct me if I am wrong, the pilot also need to be is specific position to have maximum leverage - ergo its not pilots its the plane that is the issue (or in that case Boeing's management).