define questions

[DrD]

Suppose you had 100 Volts show up across a 50 Ohm load, and you had the function, "pwr" defined as E^2/R. Then by entering pwr(100,50), you might expect 200 watts to be dissipated.

WRT units, you can begin to see keystroke efficiency by this simple definition. If you were tracking satellites, performing buoyancy computations, kinematics, or many other aspects of the real world, (and your calculations involved a lot of repetition), the ROI improves. At some point, more robust programming is advantageous.

Your greater point that the Define feature was worthless, is much the same as girls have been telling boys for years, "It's not what you have, it's what you do with it!" (One can only presume they were talking about finances ...)