00:01
Okay, so this problem is telling us that we have a technological improvement allowing firms to reduce their cost of production permanently.
00:12
Perhaps, as an example, firms have figured out a way to use the blockchain so that there is a 0 % chance that there will ever be a hack again.
00:23
So firms price in the expected risk of a hack every year and the long -term cost.
00:29
So we are going to have to change the curves to show how this affects the overall economy.
00:37
So we are assuming that aggregate demand is not affected.
00:41
Now, what we need to consider is that a firm has to take into it.
00:51
Let me back up.
00:53
This is short run aggregate supply.
00:55
This is long run.
00:56
It's fixed in the economy and this is aggregate demand.
00:59
We're going to keep aggregate demand the same.
01:01
So, firms decreasing their costs means that they can produce more products.
01:08
So what's going to happen is short -run aggregate supply is going to shift to the right.
01:13
So i'm going to call this short -run star.
01:18
And i'm going to show it like this...