Since my hope is we come to some agreement and possibly a collective verdict on many different issues a good place to start would be epistemology, which is basically the study or theory of knowledge. What exactly does it mean to know?
This subject as simple as it may sound is quite immense. A good number of what we would call very intelligent philosophers spent their lives trying to answer it and no real verdict has come out on top, although there is some consensus within groups.
Before we get to all the different types of knowledge and theories of great thinkers, I have a straight froward question to ask that has plagued me for sometime now.
What is the difference between truth and reality? Is truth a subset of reality or reality a subset of truth?