00:01
So here we're talking production possibilities, right? so we're thinking about two things, private goods, right, and public goods.
00:13
And we're thinking about how to trade off between them.
00:16
Now, the production possibilities frontier shows what's possible, right? so out here is impossible, and in here is possible, and the frontier itself is efficient, because it's the set of best possible points, right? anywhere interior can be dominated by a point on the frontier.
00:37
So here we now have, say, things like technology improvements, which allow us to produce more, right? if you have better technology, you can produce more, and that's reflected by a shift out in the production possibilities frontier.
00:56
So we get a new production possibilities frontier that looks somewhere like this.
01:00
So if this country started at a, it could move to b...