In his 1944 book "What is Life?", physicist Erwin Schrödinger speculated on the possibility of individual consciousness being a manifestation of a unitary consciousness that pervades the universe.
Is SETI unnecessarily limiting itself by only searching for intelligence within physical lifeforms? Does consciousness pervade all of space (and all of its inseparable companion, time)? Then it would, as Fred Hoyle might say, "sort of waft naked in the interstellar spaces".
If consciousness fills space-time, it could explain physicist Paul Davies' idea that the universe is fine-tuned for life by minds from the future - perhaps by our own distant descendants - that have reached back through time and selected the necessary fine-tuning of the laws of physics.
To see more details about how consciousness could indeed pervade the universe, go to http://vixra.org/abs/1502.0129