(Original Publication Date, 3 October 1991)
Panel 1: As John peels a banana for April (who's setting up the weak-ass punchline by making what always sounded like monkey noises to Lynn) to eat (because he's too damned stupid to open up a can of strained peas like a housewife or something), Liz asks him why bananas are one of the first things that people feed babies.
Panel 2: We should actually stop the strip right the Hell here (but don't) when he states that it's because they're soft and bland (and thus not a choking hazard).
Panel 3: We zoom in on April as she says "SCREECH! OOH OOH AHH!!!" because Lynn doesn't want to remember what babies actually sound like.
Panel 4: We're beaten over the head with the fact that babies aren't fully human when he thought-bubbles that it's also because Darwin's theory is likely correct.
Summary: Leaving aside the fact that laymen make a concerted effort to not admit what scientists mean by the word 'theory', what we're dealing with is the same unimpressive nitwit moaning that they should come out of the womb speaking English so We Moms don't have to endure the two-word sentence. She started out thinking that "I have to get used to these creatures so I can endure their presence" because she doesn't WANT to understand child development because it takes too long.