Comment by qsera

Just like the sensation of hearing a voice is an illusion created by your brain from the vibrations in the air, the perception of depth is an illusion created from the parallax between your eyes. We seem to have an easy time understanding that sound is an illusion, but have a really hard time considering that space and time are similar illusions...They are just some number (like the number of vibrations) that the brain creates a perception for you.

That you can measure it does not change the fact.

>Money is an illusion

Money is a number. Brain does not create an illusion for money, at least not in the sense we are considering here.