I received similar comments from all people - my son's pediatrician!
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The pediatrician totally downplayed it, and basically said that because I was a stay-at-home mom, I work with him and he was just hearing me say all of those things to him and it was simply memorization on his part.
That's an amazing memory he has!! LOL
Our Pediatrician did not make a fuss out Mr W. She was very matter of fact and broached the subject at his 6 mos checkup. At 12 mos, she asked a lot of questions and then told us we'd have an interesting time with him. It was very low key.
IMHO peds should screen for GT just like they do for disabilities. It would give parents some information they could work with.