Committee members be like “Oh, I definitely read your thesis titled “New Palladium-Catalyzed Reactions for the Manufacture of Pharmaceuticals”. So what is the band gap of thallium antimonide doped with 5% polonium in foot-pounds per mol? Why aren’t you answering? Even my undergrads know this!”
Homie dats a gas. Or supercritical fluid, which actually is indeed used for “washing” (SC CO2 is used to decaffeinate coffee). However, like others said, surface tension /= cleaning ability. Part of what soap does is increase the effective solubility of things that are not normally soluble.