Progress's Trade-Off History

In biology class, we talk about trade-offs between how many eggs a mother can produce and the size of all those eggs.

But in CIE, how does the trade-off between progress and human aggression work? If we already know all we can possibly need to know about a pigs heart, then no one would probably dissect it just for giggles without using the rest of the pig to feed someone. In my AP Bio class, little pigs were developed just for a bio company that sold dead fetal pigs to dissect... poor little Spanky. Anyways, what is the connection between human aggression and progression? Descartes obviously put his heart to good use. Doctor's learn on a cadaver's body so that at a later time they don't kill someone in the OR. (Novel concept, huh?) But how do we define what is amoral when it comes to human progress? Should only certain medical students that want to be surgeons be able to open up cadavers? How do we put away our own biases when it comes to defining what is moral and amoral about something that humans dominate? Do animals have all the rights that humans have? Should they? If we used Descartes method we could perhaps find out the reasonable and logical answers to these questions. But would anyone accept them as true?