The debate of realism versus antirealism in relation to human knowledge has raged for ages.?

Question

Any suggestion to the effect that your hand phone is not real, or the person you talked to via the phone is imaginary, would sound lunatic.
Nevertheless, if you ask how the hand phones work, you will hear things like photons leaving your phone and arriving at your phone – whether these photons are real things or some stuff imagined by scientists in order to explain what is going on, is an open question.

can anyone explain some of the issues and define realism as stated in the above example? thanks

Answer 1

Actually cell phones use wireless technology. It works by transmiting waves at a very high frequency which travels through the air, to cell phone towers, which transit the signal to space, and back down to earth again. The inventor was Nikoa Tesla.