Humanity Will Never Be Able to Fly Into Deep Space: A reasonable and testable hypothesis

This research work presents a reasonable and testable hypothesis that, even possessing the necessary technologies, humanity will never be able to fly into deep space. Humanity should consider the issues raised in this research work and, if possible, begin testing this hypothesis to the extent possible today, so as not to place futile hopes on the possibility of colonizing planets located in deep space, and, in the future, to avoid risking human lives and wasting colossal material resources on preparing manned flights into deep space.