Think I understand now. If you compress a linear spring you have to add the same amount of force for each inch of compression. So in IcePack's case, 140 lbs for one inch, and another 140 for the next and so on. So that is the property of that given spring. But if you shorten it but otherwise leave it unchanged, you will get another spring, with different inherent properties. Still linear, but at another rate. Right?
