So are we doomed to complete subjectivity? The basis of our understanding anything is through the category structures and cognitive models in our minds. These are not hard-wired, but based entirely on our experience of the world through a body. Our experience of the world varies hugely across various cultures, languages and geographies. Not even our bodies are the same, but male differs from female and our bodies have larger or smaller bits, and some of us even have bits missing. How can we ever hope to understand anything another person communicates?
In spite of the variations in our experiences, we all have two things in common.
Firstly, we all have a brain (more or less). If we don’t have a brain then we die. Our brains are quite similar too. Most of us have a cerebral cortex, limbic system, cerebellum etc. and they all have fairly specific roles. The basic architecture is much the same for everyone. This means that our brains work in quite similar ways.
Secondly, we all have a body (more or less). Our bodies may not all have the same bits, but we all have some sort of body. Again, if we don’t have one, we die. Our bodies all come from a roughly similar blue-print, even if there are infinite variations. Having two legs, two arms, a face and hands is fairly common amongst human beings. And having these various appendages shapes the way our brains function because all the input a brain receives, it receives from the body.( Collapse )
*Actually, the concepts I have described here are made up of conceptual models that are even more basic, but going into all the detail would take too long here. See  for more information.