Is it? Without pressure forcing molecules in an average direction, it isn't a fan. Right? Notably, a fan would first saturate all dead ends closest to it. B

Is it? Without pressure forcing molecules in an average direction, it isn't a fan. Right? Notably, a fan would first saturate all dead ends closest to it. Basically turning deadends into walls at their entrance. But, again, this only works if you have pressure. Right?