The observation of our own consciousness, that is its self recursive nature while we’re in a conscious state, is what makes consciousness special. With other observations we receive a stimulus, we perceive it, and we either act on it, or memorise it or forget it.

While we are doing so, we are aware that we had that perception, however we are also aware of our awareness of the perception.

So the observable property of consciousness is awareness of ‘consciousness awareness’ itself. This is not a paradox, we know how recursive functions work from computer science and mathematics so the concept of the recursivity of a process is logically coherent.

This makes our own consciousness the most observed property in human experience.