Quote:
Originally Posted by heero_yuy
Change two things at the same time but be 100% sure that you know which was at fault.  |
You obviously know absolutely nothing about engineering practice by making that comment.
There are countless cases throughout the entire spectrum of industry where engineers never know what is at fault and simply change units or components which they
suspect may be the cause. Trial and error, even in 2015 still exists and always will.