OR: you never can tell.
I had met John about a year ago, and I remember chatting with him. A nice young man a bit dazed by the birth of his twin girls. Nearly a year later I saw him, and now his wife and the two girls, one dressed in a blue dress and one in green. So after we said how glad we were to meet up again, he said to me, “you did say the love of pink was learned.”
I really don’t go around lecturing people on pink, but I imagine that when I learned he had new twin girls, I said something about how the world of pink was optional. Much to my total surprise and delight, he seemed to remember and even acted on what I said!