拿筷子的科學

To use chopsticks with the Standard Grip, a flattened, unnatural thumb pose known as Caswellian thumb is needed.

Of myriad ways people hold chopsticks, roughly half of grips engage the tip of the thumb, while the rest do not.

Did you know that chopsticks have more in common with planetary gears than Archimedean levers? Discover the real physics of chopsticks.