> Can we characterize the difference in thinking between a chimp and a human?
We can, but the difference is not in whether we think or not, but in _how_ we think. We both experience the world through our senses and have conceptual representations of it in our minds. While other primates haven't invented complex written language (yet), they do have the ability to communicate ideas vocally and using symbols.
Machines do none of this. Again, they simply output tokens based on pattern matching. If those tokens are not in their training or prompt data, their output is useless. They have no conceptual grasp of anything they output. This process is a neat mathematical trick, but to describe it as "thinking" or "reasoning" is delusional.
How you don't see or won't acknowledge this fundamental difference is beyond me.