A plan for prosperity
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，更多细节参见TikTok
He said one theory holds that the more levels of intermediation that occur in a hidden market, the less blame people tend to put on the person driving the economic activity—Swift, in this case.
Let's go back to that tug-of-war. The driver on the right now has an idea: Instead of gunning his engine, he throttles down to maintain a static friction interaction with the rails. Slow and steady. The guy on the left floors it—and what happens? His wheels spin and he gets a kinetic frictional force. Well, static friction beats kinetic friction, so the right train wins!