3 ms·
>That evenly distributes the transmission across the spectrum. To someone without the key, it appears to be random noise. I wonder if this is why SETI hasn't f
by midoridensha 4y ago
>That evenly distributes the transmission across the spectrum. To someone without the key, it appears to be random noise.
I wonder if this is why SETI hasn't found any alien communications: they invented spread-spectrum communications and it all looks like noise to us.
- ncmncm 4y agoSETI participants recognized early that we would only ever be able to pick up signals meant for us. So, those would not look like noise. It is why few take it seriously. Why would anybody be putting that much effort into trying to get our attention?
- gridspy 4y agoIt could also be that there are a series of different communication technologies. By the time we move onto the 3rd, noone is listening for the first. For instance AM radio, FM radio, TV, Spread spectrum analogue, digital, ... hypersuperfastwave ... Since each tech spreads from the source in a small sphere-shaped shell depending on when that technology was invented, you need a huge co-incidence for someone else's shell to hit you WHEN you are listening for that type of communication.