Textbooks can’t teach you everything. For instance, just today I learned through experience that goji berries will sink to the bottom of your tea cup if you squish them. This important piece of information will save the decorum of many a social occasion by keeping the little berries from sneaking into your mouth while you sip your tea. See, they don’t teach this stuff in books. You would have never learned that by reading… …uh, k, pretend that I just told you this in person.