I believe your core point is that humans can't detect a force which acts identically on their whole body. More than "detect", a uniform force simply doesn't af

I believe your core point is that humans can't detect a force which acts identically on their whole body. More than "detect", a uniform force simply doesn't affect us. This statement is true, of course, but does not seem relevant in context... On the contrary, the thread was started discussing if we could be facing a far superior technology, continued by Pyxl101 speculating UFOs could be drones because enormous accelerations prevent manned ships, and then I pointed that, if it's really a futurist technology, acceleration in itself could not be a problem. ... no practical mode of transport can move someone without physical contact The "practical" thing has been inserted by yourself. Also it's not about "practical" it's about "known by us".