Richard Panek – The Trouble with Gravity: Solving the Mystery Beneath Our Feet
More philosophical than I expected. Panek gives an excellent history of gravity, from Aristotle on down through Philoponus, Galileo, Newton, and on down the line. Philoponus, an Egypt-born 6th century Byzantine philosopher, was someone I was unfamiliar with, and it was a treat learning about a new figure in the history of science. He figures prominently early in the story, and more or less came up with the modern understanding of inertia, which he called impetus.
Unusually for his time, Philoponus was not content to rely on Aristotle and Plato’s works as settled fact. He preferred some measure of empiricism. He did not go as far as Francis Bacon’s audaciously titled New Organon (intended to replace Aristotle’s Organon, which was all but an eternal sacred text), but Philoponus’ empiricism was still controversial.
While Panek ably explains the science of gravity at a popular level, he is clearly more interested in the philosophy surrounding it. In particular, if you ask a scientist not what gravity is, but why it exists, they have no choice but to tell you they do not know. That, more than anything, is what interests Panek, and what drove him to write this book.
A good scientist has no problem admitting they do not know something, of course. A lifetime of study and experiment tells even the most brilliant scientist nothing about why, only about the what. Maybe someday we’ll gain that level of knowledge. But after so many attempts from Aristotle to Philoponus through today’s sophisticated experiments, Panek is not optimistic.