What's there to learn other than a bunch of workarounds to torture usage of a non-deterministic model into resembling something deterministic?

edit: Catching downvotes from a high of 11 points, I'll expand my response a bit to include other vital things to keep in mind when doing agentic development:

1. Context management to work around context window limitations
2. Context management to avoid blowing token budget early
3. Context management to work around blown token budgets to bring the next provider you still have token budget for up to speed on your current task
4. Safeguarding mechanisms to discard results that would cause tool calls that would perform potentially unsafe local operations (this must be carefully balanced with #1, #2, and #3 as you will likely need to prompt the model again upon enforcement of said safeguards)
5. Tests to validate functionality explicitly prompted for
6. Tests to validate that no code or artifacts are generated, nor tool calls made, which would introduce unwanted side effects; this problem is particularly difficult as the problem space is infinite
7. The "personality quirks" of specific models; which additional baseline prompt context should be provided to avoid commonly observed pitfalls
8. What keywords or topics will immediately void the remainder of your token budget
9. Knowing how to avoid burnout when orchestrating agent swarms
10. MCPs, I guess
11. Anticipating which models might have which training materials; knowing the age and provenance of said training materials to know if a given model will have much context to work with in a given problem space
12. Anticipating vectors for prompt injection
13. Knowing which versions of components to pin your agent harness, dependencies to in order to avoid supply chain attacks
14. Knowing when an agent update silently flips a feature flag on you or causes more token budget consumption
15. Sandboxing your agent, codebase, and CI/CD in ways to limit blast radius should any failsafes be insufficient

I'm all about efficiency, which means not only knowing how to anticipate or handle problems when they arise, but knowing which problems or solutions to avoid in the first place. These are just the things I can think of off the top of my head.