Some interesting relevant concepts.
in approximately a century’s time, humans may be able to conduct physics experiments that could level the entire universe—such as building massive particle accelerators that make the God particle swallow the cosmos whole.
Like a grumpy landlord at the door, alien intelligence will make contact and let us know what we can and can’t do when it comes to messing with the real estate of the universe. Knock. Knock.
hixidom said:I recommend the Wiki page on Fermi's paradox, which has a list of 20 hypothetical explanations (also recommended in the article).