Physical Knowledge

If you are consciously aware of something, must there be something, physical, that is that knowledge?

1. No we don’t have qualia, it only seems like we do.
2. Not Really. For example, you can derive or compress knowledge to represent it more efficiently.
3. Mostly. Abstract knowledge is sufficient.
4. Yes. For every pixel of knowledge you are aware of, there must be something that has that intrinsic colorness quality of each of those pixels.

This topic is one of the questions in the Socratic "Are You Qualia Blind" survey.