Do You Believe in Life After Death? These Scientists Study It

>If you think about it, consciousness doesn't exist in the material dimensions we understand. It's impossible to have an SI unit for happiness, for example.

The latter doesn't imply the former.

Assuming that consciousness exists entirely within the brain, it stands to reason that if we understood that physical process enough, we could in fact quantify happiness. You're simply taking for granted that it's impossible to do because we don't understand well enough to do it.

Also, not every physical process reduces to a single SI unit. This isn't evidence of a transcendent metaphysical reality, rather the result of some processes being complex. It's entirely likely that "happiness" is such a complex process, entirely physical and temporal and based on innumerable chemical, biological and sociological factors, but also impossible to reduce into a simple axis. We know that pain exists, and numerous scientific experiments demonstrate that pain is physical, but there is no SI unit for it, either.