There was a philosophical disagreement at the turn of the century where a bunch of ho-hums (including Einstein) decided to speak for everyone by saying everythi

There was a philosophical disagreement at the turn of the century where a bunch of ho-hums (including Einstein) decided to speak for everyone by saying everything here in this reality is discrete and isn't affected by anything anywhere else. A lot of work went into proving this over the last 100 years, with mixed results that just led to more and more testing at higher energy levels. With the Higgs, we started thinking we were "stuck" with our current theories. With the EM Drive, we're seeing things that don't fit in that model. Going back to when the original disagreement started, there were a few physicists like Bohm and de Broglie who thought there was more than met the eye going on with discrete particles past a certain size limit. Their theories included a medium, or ether, in which all of this exists. To understand it a bit better, you might want to check out the "two slit experiment". There's one on Youtube that covers doing the experiment with photos, electrons, buckyballs and polarized lasers. Basically, when you understand the experimental results, you understand that matter acts like a wave sometimes and a particle others, even at large scales. Those waves in the two slit experiment are likely responsible for the forces we're seeing in the EM drive. Also, I'm sure I've left out important bits here, but that's the basic idea. To the moon!