I didn’t see any detailed discussion about what they really mean by brain waves, or what information is contained within what they measure as brain waves. I ass

I didn’t see any detailed discussion about what they really mean by brain waves, or what information is contained within what they measure as brain waves. I assume they don’t believe brain waves encode cognition in a meaningful/complete way. It seems more like comparing the engine noises of two cars running at the same speed. Why not expect similarities/synchronization when human cognition is powered by the same brain/engine design.