And by thinking within the boundaries of our paradigm, we can conclude that this particular combination of technology and culture has not spread throughout our galaxy.

> Other civilizations may have discovered paradigms that allow them to traverse the galaxy in days, and even in seconds.

If that is physically possible. Which we have fairly strong evidence against.

> That's what was said in the mid to late 19th century. Then quantum physics was discovered.

Right! Physicists found evidence to support revolutionary findings, and it was believed because other physicists reproduced the evidence for themselves.

Keep your mind open, but not so open that your brain falls out. By all means, there is more physics to discover, but pinning one's hopes on superluminal spacetravel without a shred of evidence is folly.

> A lot of the things that are observed in the ufo phenomenon can be similar things if they are actual extraterrestrial civilizations 'observing' us. 'Shape changing' ufos, ufos that travel in a speed that no creature can withstand etc.

Yeah, I love science fiction, too. It's really fun. But you're so frothy about the possibility that physics is wrong, that you aren't considering that a small number of poorly-instrumented observations are wrong.