Comments by "Dr. Yalex" (@Dr.Yalex.) on "Debunking the Myths of Leonardo da Vinci" video.

  1. 05:40 "as thin as the spine of the knife" -- Thickness of spine of knife depends on kind/consistency of cheese to be cut. I believe it refers to the type/kind of knife used to cut certain type/kind of cheese . In other words; there are "cheese knives" for soft cheeses, young cheeses, hard cheeses.
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