"You can learn 90 percent of all you need to know about meditation by staring at a wall for five minutes," or so I was going to post the other day. Inside my own head I'm a bit of a blowhard, and these words sounded harsh and reductive, not to mention uninspiring. Blowharding away a bit later, I thought that if you were going to drive from Chicago to Iowa City west on I-80, you'd know 90 percent of what you needed to know about I-80 in the first 5 minutes of driving. Suddenly the first aphorism sounded fair and usable. But only if you kept in mind the one about I-80.