Is Time Just a Word?

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Time is a word, right? We kind of mentioned it a bunch. Is it not important at all in terms of, is it just a word? Should we be talking about causality mostly? Like Sarah, what do you think? We've talked about like memories. But when you get to things like us, it becomes very clear that the universe has a directionality associated to it. So it's not reversible at all. Because the no man ever steps in the same river.

Sara Walker is an astrobiologist and theoretical physicist. Lee Cronin is a chemist. This is a conversation and debate about alien life and alien civilizations. Please support this podcast by checking out our sponsors:
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OUTLINE:
Here’s the timestamps for the episode. On some podcast players you should be able to click the timestamp to jump to that time.
(00:00) – Introduction
(07:47) – Aliens
(21:53) – What is life?
(29:35) – Assembly theory
(52:03) – Math
(1:03:45) – Communication with aliens
(1:28:38) – Evolution of the universe
(1:37:56) – Creating alien life
(1:45:29) – Origin of life
(1:52:29) – Before the Big Bang
(1:59:22) – God
(2:09:39) – Goal-directed behavior
(2:27:37) – Time
(2:35:54) – Free will and imagination
(2:51:06) – UFO sightings
(2:56:06) – Alien life forms debate
(3:11:14) – Robots
(3:20:29) – Love and emotion
(3:38:55) – Beauty in science
(3:49:06) – Random questions
(3:58:30) – Advice for young people
(4:01:48) – Life on Earth
(4:06:12) – Memory