From Keith Evans, Pwllheli, Gwynedd, UK
I found the article on the essence of reality very interesting. However, it isn’t difficult to conceive of things being equally real whether we are considering our normal perceptions of the world (“red tomatoes”) or more abstract concepts, such as quantum fields. We know that light consists of a continuous range of frequencies. However, our perception of different colours is also real, even though the mystery of how the brain produces this seems as hard a problem to solve as consciousness (2 May, p 36).
