Hello, SFIA audio listeners. In this month's Nebula exclusive, Big Alien Theory,

we're asking the reason alien civilizations might be rare is because most aliens are huge.

To hear it and every episode early and ad-free, plus hours of bonus content,

check out go.nebola.tv slash Isaac Arthur and use my code, Isaac Arthur.

300 years ago, most people lived and walked on farms and rural villages their whole life,

and didn't know much about life 300 miles away, let alone 300 years in the future.

So what will life be like 300 years in our future, or for those living 300 million miles away?

So today, SFIA celebrates its 400th regular episode.

As a show dedicated to science and futurism, I thought it would be a good choice to look at what

life might be like in the year of 2323, three centuries from today, and I chose the phrasing

Life in 2323 AD as the title intentionally, rather

than the specific technology or achievement, or even the world humanity, as I suspect that

tour might get blurry in times to come, and 300 years is probably well into that window already.

Also, we all focus more on life in this era, as opposed to whether or not we have flying

cars or jet packs or warp drives, and so while we discuss a lot of technology today, this

episode is more about lifestyle scenarios and civilizations.

For that reason, after the intro, we're going to switch into the Easter egg heavy narrative

format we sometimes

use on the show and explore the lives of seven people, Amy, Becky, Cameron, Duncan, Emily,

Fido, and Gary Gugelson, and with them, some of the technology we expect. Now, predicting the future

of humanity even three years from now is a tricky business,

let alone three centuries, and we work off logic flavored with intuition here or not crystal

...