[dheera]

> The aliens have the same physics we do. Science isn't magic.

Show a spacecraft to someone from the middle ages and they would think it's magic.

There is physics that has not been discovered. Lots of things are still unexplained.

> no, the aliens are not able to collect radio waves from below the noise floor

Before we had quadrature modulation and quadrature phase shift keying, we thought we had hit the noise floor for wireless bandwidth. After we thought we really hit the ceiling, we had beamforming. There's stuff that hasn't been thought of. We don't know the unknown unknowns.