Did you know that the word “knead” comes from the Old English cneadan, meaning “to press together”? It’s related to the word “knead” in German, kneten, which sounds exactly like the action. Also, professional bakers in Japan sometimes use a shiroi kaiten (a white spinning bowl) to mimic hand motions—but they admit hand-kneaded bread has more soul.
One more: a 2017 study found that hand-kneaded bread had a 12% higher moisture content than machine-kneaded loaves. That means a softer, longer-lasting crumb. Your hands are literally engineering better bread than a mixer.