I don’t actually believe in airplanes, I think they’re just a symbol in our conscious interface, as Donald Hoffman argues. But I think airplanes are connected to some rule of our psychology that allows us to fly under certain conditions. And to our limited point of view, that rule looks a lot like an airplane.

Couldn't you test this by having someone attempt to use a fake radio believing it's real?

I mean if that were true, wouldn't ANY air plane work? Wouldn't it be impossible to improve on the design of airplanes if it's all belief?