The missing terms in this witty discussion are:
1] elastic deformation,
2] plastic deformation

Elastic has nothing to do with your underwear, and plastic has nothing to do with polymer parts, both have a lot to do with paper clips and mag springs.

In my mechanical engineering curriculum, Electrical Circuits was a 2 semester agony. Spring Theory and Elastic Deformation was 4 weeks of severe pain.

I will continue my walk away.

__________________
S&WHF 366