See this is what I never get. Whenever there's a mention of alien life on another planet, they are ALWAYS apparently "far more advanced" than ourselves. Why ? They might be the equivalent of overdeveloped frogspawn lolling about in a swamp for all we know. I bet they haven't invented microwave ovens, the internal combustion engine, or Hollyoaks. What makes THEM so bloody clever eh ? EH ?
Frogspawn lolling about in a swamp would be too lazy to send signals. This means they have at least got TV, maybe even the Internet.