242 karma · joined March 25, 2009
There's two types of advertising (probably really more): 1) We don't care where you buy the thing we make, just buy it. (Mazda) 2) You want that thing in #1, come buy that thing from me! (Mazda dealership)
I don't think there's ever been a question of the efficacy of #1, but #2 is probably nearly useless online. Anecdotally, an advertisement might remind me I want something, but it isn't going to change my habits in how/where I buy it. Bob's House of Laptop Batteries could offer me a price that's $2 less than Amazon, but if I see Bob offering the exact battery I need at exactly the moment I need it, there's still a pretty good chance I'll buy it from Amazon because of 1) ease, 2) trust, 3) Prime, etc.
You're assuming everyone is rational. For instance, if I were a future billionaire I'd totally do it... knowing I'd never see even a glimmer of return on the investment... just cause.
The largest radio telescope we have (the 305 meter diameter Arecibo) would need to have it's sensitivity increased by around two orders of magnitude JUST to pick up our TV/FM/AM signals from outside the solar system. If we move into the narrowband signals then, depending on the source-strength, it could pick up signals at up to a few thousand light years... if it happened to be pointed in exactly the right direction at exactly the right time. So, our most sensitive instrument is only capable of measuring a fraction of a percent of a fraction of a percent of the galaxy.
I just straight-up don't believe that we're even remotely approaching the capability of asserting that the galaxy is sterile of higher life that's constantly dumping EM noise... and that's without assuming they've found ways to transmit data that we're ignorant of or that we've seen it and just haven't noticed it.
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The other thing (and I feel a bit like a religious person saying this) is that we have exactly zero basis for asserting that the type of machine you're talking about haven't been here. Given that if one of these machines came here, and stayed, the Earth itself would annihilate all traces of it (especially on the surface) within short order we shouldn't necessarily expect to find evidence of a visit.
Taken to the extreme, you could even reason that all life on Earth could be the product of one of these machines.
Maybe you could slowly transition... replace one bulb a week over the span of a year and she may not even notice :)
I still disagree with the assertion that "how many friends you do or don't have is entirely up to you". It may be true in some extremely narrow sense, but if it came down to it how many people would give up the spouse they love because they were the problem, or their children because they were, or drop everything and move to where people were more similar to themselves?
It's also impossible to travel 30mph... Oh, Petroleum!
It's also impossible to go to the moon... Oh, RP-1/LOX!
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Stop pretending we know everything about the universe when we clearly do not. The best you can claim is "No... with current understanding".
I hate my phone.