For the general public that does not have an objective scientific bend, how do you tell virtual reality from the real thing?
That’s a serious problem, actually. Hell, I have an objective scientific bend and I have plenty of trouble with it.
Ultimately, the stock answer is: We should believe the most what we can doubt the least, when we try to doubt very hard, using a mix of experience and consistent reason based on a network of experience-supported best (so far) beliefs.
That’s not very hopeful, but it is accurate. We believe Classical Non-Relativistic Mechanics after Newton invents it, not because it is true but because it works fairly consistently to describe Kepler’s purely observational laws, and (as it is tested) works damn well to describe a lot of quotidian experience as well on a scale less grand than planetary orbits. We encounter trouble with classical mechanics a few hundred years later when it fails to consistently describe blackbody radiation, the photoelectric effect (the one thing Einstein actually got the Nobel Prize for), the spectra of atoms, given Maxwell’s enormously successful addition to the equations of electricity and magnetism and the realization that light is an electromagnetic wave. (more…)