If you'd imagine the growth somewhat like a material paste, if the material flow is constant and if the branches grow with equal length, then da Vincis rule fol

If you'd imagine the growth somewhat like a material paste, if the material flow is constant and if the branches grow with equal length, then da Vincis rule follows, no matter the individual branch girth. I suspect da Vinci wasn't observing this as much as arriving how it ought to be.