Which part of science is "The Ultimate science"?

Which part science is "The Ultimate science"?

Of all the science that mankind has today, what part of science do you think is "The Ultimate science"? The one part with most value?

In other words, of all the scientific discoveries and information we have about how the world and the universe works, which is the most valuable to humanity?

Here are a few suggestions;
1. Our knowledge of astronomy?
2. Our knowledge of cosmology?
3. Or understanding of the atom maybe?
4. Geology and our ability to mine metals from the Earth?
5. Space travel, or ability to build rockets and put stuff into space?
6. Space, our ability to send probes to other planets?
7. Chemistry, our ability to fully understand the chemical world?
8. Biology, hospitals, understanding and curing illness?
9. Nuclear physics, the ability to split or fuse atoms?
10. Climate science, our ability to understand the planet we live on?
11. Psychology, our ability to understand the human mind maybe?
12. Travel, our ability to re-engineer our planet for plains, trains, etc?
13. Construction, our ability to build incredible cities?
14. Technology, our ability to build machines, computers, phones, etc?
15. Mathematics, our ability to do mathematical things?
16. SETI, knowing if we are alone in the universe?
17. War, the science of war? Defeating your enemy?

That's just a few suggestions, please do add more.

What parts of science are most valuable to humanity? What's "The Ultimate science"?

John.
____________

What parts of science are most valuable to humanity? What's "The Ultimate science"?

Our scientific investigation and understanding to ever greater detail of the world and the universe around us.

All the rest of your list are just a few of the positive consequences of that.

Keep searchin',
Martin