<p>Nebuchadnezzar noticed something odd about the human body and asked Ben Sira to explain it. Everywhere on the body, each hair follicle holds two hairs. But on the head, each follicle holds only one. Why?</p>
<p>According to the Alphabet of Ben Sira, a medieval work composed between 700 and 1000 CE, the answer comes down to divine engineering. If God had placed two hairs in every follicle on the head, the weight and density would have darkened a person's vision. One hair per follicle was the precise calibration needed to protect the eyes.</p>
<p>Then Ben Sira draws a stunning parallel to the natural world. Raindrops, he says, work the same way. Each raindrop falls from its own "follicle" in the sky. If two drops fell from every opening instead of one, the resulting deluge would surpass even the Great Flood. The world itself would be destroyed.</p>
<p>The underlying principle here is one of the Alphabet of Ben Sira's recurring themes: wherever God created a problem, God also created its remedy. This mirrors a teaching found in the Talmud (Bava Batra 16a), which the text references directly. Every affliction has a built-in cure. Every danger has a built-in limit. The restraint that holds back disaster is itself a form of mercy - whether it's a single hair on the scalp or a single raindrop from the heavens. Nebuchadnezzar was so impressed by this answer that he told Ben Sira, "How fortunate you are, my son, that the Holy Blessed One has revealed so much to you."</p>