Grammar, is that logical, Captain?

It has often been said that English teachers were born with impeccable grammar, often leading to their natural inclination to become English teachers.

I must confess, though, I wasn't always so perfect in my grammatical endeavors. And, I suspect there are many teachers out there hiding such a horrid, ungrammatical past as mine. In some ways, grammar is learned naturally, and in others it is pounded into the head through various means of torture. I mean, uh, the English classroom. Seriously, however, it takes time to learn the writing process. That is why we started grammar quizzes last week.

So, your assignment is to respond to this post sometime in the next couple of weeks. (Let's shoot for by October 8.) And discuss some grammar issues.

Your responses should correspond to these items:
(Remember, there are no right and wrong responses. These are just here to provoke discussion.)

Grammar is learned from our surroundings.
Grammar is learned from an educated person.
Everyone has the same grammatical sense.
When a person's grammar is off it means that person isn't as educated as another.
Everyone can tell where someone is from based on the person's grammar alone.
Grammar is universal, rigid, and follows logical rules.