Quote Originally Posted by Willow Oak View Post
"I saw" is not correct, if you did not see. Likewise, "I have seen" is not correct if you did not see.

Furthermore, it is grammatically incorrect to begin with a conjunction, such as the word "but."

Still furthermore, it is grammatically incorrect to separate two words or two phrases with a comma when they are separated by the conjunction "or," as in "'I saw,' or 'I have seen.'"

Worse still is correcting the moderator of a forum.
It is not incorrect in the course of a conversation to begin a sentence with a connection, although it is poor form in written literature.

It is correct to say "I saw" as in "I saw the squirrel." It is also correct to say "I have seen squirrels." I only put that comma in that sentence as I was typing it and edited it to put the "or" in and therefore should have deleted the comma. I was in error in that particular instance.