It doesn't really make sense to talk about a single product from a single supplier when talking about supply and demand. You completely leave out the competition side that drives the whole system.
A single example of gravity not working means the theory of gravity doesn't work, unless you mean that economics should not have scientific scrutiny.
Economics is in a dire state of proving theories right. It only accounts for perfectly rational actors. A famous nobel prize winner was proven wrong in the same year or so and he said his graphs didn't account for it.
Economics is in a dire state of proving theories right. It only accounts for perfectly rational actors. A famous nobel prize winner was proven wrong in the same year or so and he said his graphs didn't account for it.