Probing Question: Why are babies cute?

Babies hold an almost universal appeal, even for the grouchiest of people. There's just something about their big shining eyes and button noses that draws people in and stirs their most tender feelings.
In short, babies are cute.
This cuteness is so obvious that people take it for granted. But what exactly is it about a baby that prompts those "oohs" and "ahs"?

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