Anthropic Principle
The idea that the universe's physical constants are fine-tuned to allow for the existence of conscious life. Susskind explains it as a possible, though widely disliked, explanation for the small value of the cosmological constant.
Videos Mentioning Anthropic Principle

Leonard Susskind on Richard Feynman, the Holographic Principle, and Unanswered Questions in Physics
Y Combinator
The idea that the universe's physical constants are fine-tuned to allow for the existence of conscious life. Susskind explains it as a possible, though widely disliked, explanation for the small value of the cosmological constant.

Jeffrey Shainline: Neuromorphic Computing and Optoelectronic Intelligence | Lex Fridman Podcast #225
Lex Fridman
Refers to the idea that the universe's parameters must be consistent with the existence of intelligent life, as we wouldn't be here to observe it otherwise; the weak form is a statement of selection bias.

Lee Smolin: Quantum Gravity and Einstein's Unfinished Revolution | Lex Fridman Podcast #79
Lex Fridman
The principle that the universe's laws and constants must be such as to admit the existence of observers. Smolin contrasts this with Cosmological Natural Selection due to its testability.