[JangoSteve]

I think you missed the point in the last section. I think a lot of people hesitate to seek out the answers for shame that they do not already know the answers. I'm not saying to be comfortable in your ignorance. I'm saying, don't be ashamed to ask questions.

And yes, as the rest of the article states, the third category is incredibly (even inconceivably large). In case I actually need to say it, those pie charts are for illustrative purposes only, i.e. not drawn to scale.