00:01
So we're talking about demand here.
00:02
So i'm going to sketch two demand curves, right? price and quantity.
00:08
Quantity and price, demand being a downward sloping relationship.
00:14
And we are thinking about what might increase or decrease.
00:17
So let's draw an increase in demand and a decrease in demand, right? my increase in demand means that at any price people want more.
00:28
So here demand is increasing and here demand is decreasing at any price people want less.
00:36
So what's going on here? a, the price of chicken falls.
00:41
Well, chicken is a substitute, right? so a, we have a substitute getting cheaper.
00:50
So when people see that chicken is getting cheaper, they say, i can get my protein or my food from chicken more cheaply.
00:58
I'm going to stop buying hamburger, right? sometimes they call this a related good.
01:05
But this is going to decrease demand because the substitute attracts people away from hamburger, right? they see that chicken is cheaper.
01:13
They start feeding themselves using chicken instead of hamburger, right? the price of hamburger buns double.
01:21
So this is, again, a related it good.
01:24
This is a compliment getting more expensive, right? you need hamburger buns to go with your hamburgers...