Sum up all the knowledge known, unknown and undetermined and that's a lot of stuff.
But to actually place that knowledge in categories is quite simple:
The things we know we know.
The things we know we don't know.
The things we don't know we don't know.
Think of what people are very sure about, but really don't understand at all.
It's almost that within a point in time which we have acquired the greatest amount of knowledge and have the easiest, fastest access to it, we really don't know much more than those who have gone before.
Imo, the unknown is infinite compared to the known. Many in academia are stuck in a narrow bandwidth of knowledge & only believe what others have taught them or what others have written. Some of the greatest inventors/philosophers throughout history had no formal education. 2 brothers in a bicycle shop made the 1st airplane, while Naval architects of the time couldn't figure it out. Many people are taught that deflation/stagflation can cause economic downturns, when they are just symptoms of economic downturns. Also, many people are taught that oil is non-renewable, even though its the excrement of bacteria.
So jbizz, what I think you're saying is perception is reality.