Book Review: “Cats’ Paws and Catapults; Mechanical Worlds of Nature and People”, by Steven Vogel.

cat’s paws and catapults - book review

This book contains numerous examples of design, from an engineering perspective. The theme is on comparing the design of evolution with that of technological invention. Although the book has almost precisely a 50% natural and 50% artificial split, you get the impression that the author is slightly biased in favour of technology.

Steven Vogel acknowledges they are different: nature abhors using straight lines, engineers love them; nature has not been able to employ metals, yet they are commonly used in our constructions. Although I for one would never be critical (as this guy sometimes is) of nature by saying that it never utilises metals or whatever. It doesn’t need to - it simply isn’t required. To favour an I-beam over a tree limb is foolish and misguided. Is a piece of metal or lump of concrete alive? Certainly not. The astonishing feature of nature is that it manages to evolve these things, that are inherently living entities, which can grow and replicate themselves with no awareness or foresight!

So the trouble with this book is that it doesn’t address the fact that a tree does way more than just support itself: a tree is not merely a vertical structure; it is an extremely complex photosynthesis machine. [Read more →]