Whatever gave you that idea?And it could be the aliens really are friendly and here to help, we shouldn't assume they are evil just cause, that is how wars start. It'll probably be our own fault for starting an interstellar war.
What amazes me is that Hawking doesn't even dismiss interstellar travel...
What amazes me is that Hawking doesn't even dismiss interstellar travel...
WikipediaThe usual example given to illustrate an Outside Context Problem was imagining you were a tribe on a largish, fertile island; you'd tamed the land, invented the wheel or writing or whatever, the neighbours were cooperative or enslaved but at any rate peaceful and you were busy raising temples to yourself with all the excess productive capacity you had, you were in a position of near-absolute power and control which your hallowed ancestors could hardly have dreamed of and the whole situation was just running along nicely like a canoe on wet grass... when suddenly this bristling lump of iron appears sailless and trailing steam in the bay and these guys carrying long funny-looking sticks come ashore and announce you've just been discovered, you're all subjects of the Emperor now, he's keen on presents called tax and these bright-eyed holy men would like a word with your priests.
I think that Professor Hawking has a point, but any race capable of crossing the stars would surely have high-energy technology capable of wrecking the planet, beefed-up defences or no; so right now ir would most likely be a waste of resources for us to do so. Maybe the norm with intelligent species is to live quietly and so not get noticed too easily.I think it's time we beef up our planetary defenses.
What say you?
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