Thanks to PF, I discovered a new homo sapiens: Let's call them smart morons...This may seem like a contradiction but it's not. Half of college graduates are in this category.
On the surface, smart morons seem intelligent and use proper English.
The moron part comes out when you ask them a question on the very subject they so eloquently opined just a minute ago.
This is when smart morons sense danger and (1) go silent, (2) switch the subject, (3) turn into Nostardamus 2.0 to use unverifiable future tense, (4) call the asker names, or (5) send you to Google.
My advice: Detect smart morons early and don't waste your time. You will never gate it back or the satisfaction of winning.