These two lectures speak to a very subtle, but very important topic underlying economics.
There’s a struggle between empiricists who insist there is no knowledge without experiment, and rationalists who believe in the triumph of reason. When the former, the empiricists reign, economics gets treated like just an opinion true only until it can be refuted, with all theories (including socialism) being valid until experiments are conducted.
The second of these two lectures by Hans Hermann Hoppe is more accessible than the first.