Related thread a week ago: 'Entropy: A little understood concept in physics [video]' https://news.ycombinator.com/item?id=36560104 https://news.ycombinator.com/

Related thread a week ago: 'Entropy: A little understood concept in physics [video]' https://news.ycombinator.com/item?id=36560104 https://news.ycombinator.com/item?id=36560104 I read "Hour of Our Delight: Cosmic Evolution, Order, and Complexity" by Hubert Reeves as a teenager which I can also recommend. That's how I learned about the low entropy sunlight converted to higher entropy IR radiation on earth, allowing complex life to exist without breaking the 2nd law of thermodynamics. So I was happy to see it talked about. Now, life seen as an entropy-increasing system was a really interesting take on the topic! Until now my understanding was that it's the universe expansion that actually sorta decreased the local "entropy density" and allowed to radiate low entropy IR in the ever colder empty space in the first place.