But my favorite result that we came across when we were doing the book is on that point.

So we know from psychology about this thing called attachment bonds and the attachment bonds that we form with our parents, especially our moms, will go on to influence all of our relationships for the rest of our lives.

They get set really early in our first couple of years.

So if you've got a parent who is, you know, responsive and gentle and kind, you're going to have secure attachment.

If your needs are neglected, you might get a kind of anxious attachment.

You know, you can sometimes change it, but it's really important.

So there's a ton of research on attachment bonds.

And one of the ways we've studied that is that they will put babies in fMRI machines, which are the things that show the part of your brain that light up when you're thinking about different stuff.

And then they'll let them see their moms and a certain part of their brain lights up.

That doesn't light up for friends, you know, people who are they're used to seeing or acquaintances.