To say that "selectivity" and "sensitivity" are interchangeable and can be used either way is wrong. The people taking this liberty and validating their position by saying its their choice are promoting their ignorance of the subject or the ignorance of being accurate...especially for specifications. As to why I would want to know something if I cannot change or modify it...maybe the tutors in your youth should have told you that the sun moves at 3 miles to the gallon and actually does not exist when it is past the horizon....AFTER ALL....YOU CANNOT MODIFY, OR CHANGE IT.

1. I could use the proper information in selecting my equipment and as a comparison of value and quality.

2. I could use the proper information for calculations to determine effective range over various conditions of interferance and meteorology.

3. If an auto manufacturer specified a vehicle to have a gas milage of 36 psi and to have a tire pressure or 20 mpg and then state that it was their "choice" to state it as such (ie. not a misprint) I would truly wonder what else was screwy with the vehicle.

I was aware of some of the previous threads on this discussion and only asked the question again because the answer was vague, and somewhat arrogant.