Ask HN: Most interesting trade-off phenomenons in your field?

As I talk to different folks from different domains, it's always interesting to me to learn what they're optimizing for and what the variables are.

Usually there's a sweet spot between two extremes.

Examples:

- Bias-Variance trade off from statistics and machine learning

- Freedom vs Security from philosophy

- Explore vs Exploit from computer science

I'd love to hear some other examples from e.g. anthropology, chemistry, physics, bio, marketing, etc.

What I'm really hoping is that this happens as much as possible:

- person from field A posts

- person from field B replies to field A post: hey! that's kind of like X from field B

- person from field C comments: Or like Y from field C!

etc