Tuesday, June 28, 2011 3:23:28 PM
I remember learning about Spiral galaxies, and one of the particulars among them being that they're more conducive to the sustainability/incubation of life. It was from that moment forward that I began to wonder whether intelligent life elsewhere might be aware of this, and if so, whether that could serve to limit their search to a more effective end?
Sounds likely, but I was limiting it to aliens already within this galaxy. If you`re going with the universe, then the chances of finding us are entire orders of magnitude *less*, even if they can assess which galaxies are more likely to contain life.
Your idea could work on a galactic scale, though. The centre of this galaxy is probably less likely to contains places conducive to life, so it might be better to start a search in the arms.
I think it`s still implausible that they would have surveyed Earth within human existence, let alone civilisation.