Is this a question with a dot at the end, or what?

Since that is obviously not "a question with a dot at the end", did you mean to write "is THAT a question with a dot at the end, or what?"?

Uh - me like dots long time?

Is that a reference to "A, B, ........................", which was a postcard that Iva Matrix once sent to Martin Gardner?

How close am I?

Not much I am afraid, why don't you google "several days before the meaning suddenly came to me"?