===The phenomenological cage===

[[File:Brain in a Vat.png|200px|thumb|left|How can you know if you are not a brain in a vat?]]

Deliberation is a process of thoughtfully weighing options before making a decision. Yet in order to choose among the available options, we have to agree on the options available to us, and theןir outcomes. But many times we find ourselves in disagreement about the options or the ways the world behave. These disagreements are the results of differences in our understanding of how the world works. So in order to be able to better understand why we perceive the world differently, I suggest we have to understand how our knowledge is built, and why it is different from person to person. This Page will try to explain how knowledge is built and why we perceive the world differently.