Erik Malund said:
In answer to your question, Yes, it is the responsibility of the engineer to select the best component for the task. However, if the board has a given component on it and he's required to use that board, then the best choice is limited to what's on the board, isn't it?
If "is the responsibility of the engineer to select the best component for the task" then how come it is not "the responsibility of the engineer to select the best" board "for the task"

Yes, but if he's directed to use that board, or a specific portion of that board, then it's the best choice.

And, as usual you circumvent the issue

I did NOT discuss what he was "directed to do" i discussed that when it as you yourself posted is his responsibility to select the best component then why is it not his responsibility to select the best board

The problem with your constant trumpeting of "this is better" or "that is stupid" doesn't consider the constraints that have been placed. You never ask, "How long do you have to obtain the components?" and, "How much budget do you have?" or "When do you have to be finished?" nor do you ask, "How many are you going to build?" If a proposal for hardware allocation has to be done an on the boss' desk TODAY, it may not be possible to involve that part that YOU like.

you ask half questions
"How long do you have to obtain the components?" does that matter if it takes two days to obtain the components is a) it saves a bundle or b) you save 2 days development time.
"How much budget do you have?" if the budget does not allow a) using a cheaper component or b) spend $5 on a better one, then the whole thing is silly
"How many are you going to build?" a) If a low count, then the component should be selected based on saving development time b) if a high count then the component should be selected based on cost.
so all 3 issues are answered use the right component!

In no case at all, however, is it YOUR role to answer a question not asked, nor is it YOUR place to tell him he's wrong just because you don't know how to answer his question.
evidently it is YOUR role to to lead the poster down the garden path to a subnoptimal design.

because you seem to believe that a speed reduction of one part in 10^17 will significantly slow down your ultra-costly favorite MCU. If you really did know, you'd probably not be so touchy about it. You've been asked the same thing several times and, each time, failed to answer it. That suggests you don't know how to answer it. When you don't know, why not just leave it alone?
Once again, you circumvent. If you had taken the time to look at my example, instead of coming up with another you would not have posted this ultimate balderdash. Also, if you took the time to read before posting, you would see that I actually stated that if you had a very rare I/O event, it does not matter speedwise what method you used.

Now, YOU emailed me saying that you didn't think this line of discussion was useful, yet you continue.
No, I did not!. I e-mailed you "let us keep the personal out of it" and your next post is a very personal attack.

What I do care about is when you lie to people by telling them that there's something wrong with what they want to do just because YOU don't like it.

re lies, what about you misqoting my e-mail.

I do NOT 'lie' I express an opinion. Of course, if it does not agree with yours, in your little mind it becomes a 'lie'

Erik