> In ordinary economics, things do not have negative prices: If nobody wants a thing, if you’d have to pay them to take the thing, you just don’t make it. I th

> In ordinary economics, things do not have negative prices: If nobody wants a thing, if you’d have to pay them to take the thing, you just don’t make it. I think it's more that when something consistently has a negative price we reframe it as a positive one. Garbage has a "negative price", but we normally call it a landfill fee. Some kinds of grad school have "negative tuition" but we call it a stipend. It's things switching signs that breaks this way of talking.