Sometimes titles get blurred with translation as to what they really mean - and it's not clear (to me, English UK) who you're aiming your questions at.
Are you aiming for aircraft maintenance mechanics (English US) or factory-type design engineers?
There is a large difference and I don't think there's a lot of design engineers on this forum. (but I am now bound to be proven wrong with that last statement!)
xactly
no way to answer questions like the above.
besides I would hate to list my time getting a cup of coffee, sitting in meetings just to listen, answering the phone, calling the wife, staring at the computer screen while reading office E-mails. Running a computer code with different inputs, explaining to the boss why it won't work etc.
Then there is the excitement of scanning PPRuNe looking for postings that I can jump on and tell somebody they are wrong.