The Mars Surveyor wasn't lost because of the units system used. It
was lost because someone didn't validate the code that was written.
What is much more important to an engineer is to have an intuitive
sense of what he is handling. I have intuitive sense about
36-24-36, but I don't much respond to 91-61-91
I have an intuitive sense of a 100 ft-# of torque, or 200
horsepower. I personally have little intuitive sense of the metric
equivalent, not because I say that it is wrong, but because I
didn't grow up with it.
What is much more relevant in the original post that started all
this is the prevalence for unclear communication. It really
doesn't clarify the situation much if Americans only say 20" x 30",
and the rest of the world says 20 x 30. How are we to know what
units were meant? By omission? I think not.
If the Europeans are going to get so ansy over metric, then I guess
we all should agree to write only in Italian as well.
BTW, I have no intention of converting. There is no value in it.
Bill