What Don Lincoln has said about Theory of everything

Lincoln believes a theory of everything will not be found in his lifetime or his grandchildren's or their grandchildren's lifetimes.

“Now, this isn't a thing in my lifetime. It's not a thing in my grandchildren's lifetime or even their grandchildren's lifetime”

Lex Fridman Podcast: #497 – Biggest Mysteries in Physics: Antimatter, Dark Energy & ToE – Don Lincoln (May 29, 2026) · Listen from 1:23:34

Lincoln argues accelerator energies grow only about sevenfold every 20 years, making the quadrillion-fold gap to unification energies enormous.

“We get something like a factor of seven increase in particle accelerator energy every 20 years. And so we have to get to a quadrillion times”

Lex Fridman Podcast: #497 – Biggest Mysteries in Physics: Antimatter, Dark Energy & ToE – Don Lincoln (May 29, 2026) · Listen from 1:24:27

Lincoln argues that practical progress comes from investigating concrete open questions like dark matter rather than extrapolating far beyond measurements.

“The correct way to make progress, practical progress, towards the theory of everything is to look around at the things that we don't have answers to right now”

Lex Fridman Podcast: #497 – Biggest Mysteries in Physics: Antimatter, Dark Energy & ToE – Don Lincoln (May 29, 2026) · Listen from 1:32:38