I could say that many unexplainable things have a hard problem. How is it that we can smell something and instantly our brain can recall very old memories wher

I could say that many unexplainable things have a hard problem. How is it that we can smell something and instantly our brain can recall very old memories where we noticed that smell? It seems impossible that atoms can communicate with each other so that the atoms that make up a smell can trigger other atoms in your brain to search for yet other atoms that "stored" a snapshot of a previous time and location (aka a memory). That's despite each individual atom of one memory being identical to the atoms of another memory. It's the number and arrangent of the collection of atoms for each memory that is different. However, I wouldn't create some artificial distinction for people to debate over about an "easy problem" and "hard problem" to describe how memory works. Actually to Chalmers, this entire memory process is an easy problem that may be unknown but is "simply" some interaction of atoms. I doubt he would say there's anything hard about this problem. That's absurd to me.