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This is one of the reasons why I don't get sweaty about the issue. We
??? Suppose I am trying to have a student find the displacement of an
object that has an initial position of "0" and a final position at 5
meters. The student would then be expected to subtract the dimensionless
position "0" from the dimensioned quantity of 5m. This is quite contrary to
the approach that most of us try to instill in the students, where only
terms of similar dimensions can be added or subtracted.
Am I simply misunderstanding the point?