An oil droplet guided by a wave, similar to the pilot wave model of quantum theory. There has been a lot of digital ink spilled over the recent paper on the reactionless thrust device known as the EMDrive. While it's clear that a working EM Drive would violate well established scientific theories, what isn't clear is how such a violation might be resolved. Some have argued that the thrust could be an effect of Unruh radiation, but the authors of the new paper argue instead for a variation on quantum theory known as the pilot wave model. One of the central features of quantum theory is its counter-intuitive behavior often called particle-wave duality.