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 add free, plus hours of bonus content,

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

Okay, we should be getting started for our monthly Q&A session.

We're just going to wait real quick until we find out if anything's live and healthy before we get into the details.

But this is a little bit earlier that we normally like to do them because we like to do them

at the end of the month, but it turns out for January and February, we have them at the very end of the month on Thursdays the 28th

and 34th or Thursdays for those months so we're going to do this one on January 20th

because we missed our one for December all we're waiting for questions to come in and

for me to get more that all the video is actually up and walking. We did have a couple

of questions I asked for on the community tab and the Facebook page we got started and the one

we're going to start with is retirement age. Somebody had asked if we would have how retirement

would work if we had life extension and mortality. And that's kind of an interesting one because

we can kind of see where

that's starting off even nowadays. Retirement was not really something people did much in the past.

If you look like more than a century or so back, you didn't really completely retire.

And these days, people tend not to completely retire anymore either. They'll continue to work

part-time or get

involved in community groups. And so a lot of it's going to depend on the civilization you've got

going for you, but you're not likely have a pension or social security that just lasted forever. You know,

you can do maybe 10 or 15 years and something like that for 30-year work time, but I don't see how you'd be

...