We’re all pretty familiar with what happens when we sustain a knock on the head: First, the all-too-audible crack, accompanied perhaps by a moment of surprise. Then, the swelling and, if we’re lucky, just a minor bump or scrape.
We’re all pretty familiar with what happens when we sustain a knock on the head: First, the all-too-audible crack, accompanied perhaps by a moment of surprise. Then, the swelling and, if we’re lucky, just a minor bump or scrape.