https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3979699/
both biomechanical models agreed with da Vinci's rule when the branching angles of daughter branches and the weights of lateral daughter branches were small; however, the models deviated from da Vinci's rule as the weights and/or the branching angles of lateral daughter branches increased.
我最近连读2本达芬奇的书，作者们偏向性都太强了--只给出Leonardo da Vinci's Rule，再夸他是天才， 而不说具体这个Rule的适用范围很小。
