Thank you for bringing your son into the library. We are so happy to have him in the children's section, and I sincerely hope that your visits to our fine library inspire him to a lifelong love of books.
I'd also like to point out that leaving your child unsupervised in a public place is technically child abandonment and you are so freaking lucky that I didn't call the cops. Since you apparently think that your son is young enough to wander around with a pacifier in his mouth (even though he can walk and talk, although he is hard to understand around the binky!) I am at a loss as to why you think it is okay to leave him all alone in a 40,000 square foot building while you are on the other side of it, completely immersed in your internet surfing.
Just because I am sitting at the desk in the children's area does not mean I am watching your son. Luckily for you, I am a fairly patient person who loves children, and didn't mind him following me around or providing him with some books to look through or things to color with.
BUT. I could have been a child molester. Your son has no sense of stranger danger or where to go or not to go, since he is three. Leaving him unsupervised for over an hour is not only unwise, it is also criminal. Also, looking at me contemptuously when I walked over to you (since you hollered for him from the circulation desk, instead of coming to the children's area to fetch him) and reminded you politely that according to library policy all children under seven must be with an adult at all times did not help your case with me. What really sealed the deal was the "little bitch" comment you made under your breath when I told you that if it happened again, I would call the police.
So I've changed my mind. If you do it again, I will go ninja librarian on your ass.