With school starting up again, permalancers getting back from their summer vacations, and the tech boom showing no signs of abating, most SF cafes are a sea of laptops at the moment. (Need to get some work done? Here are a bunch of good spots with free wi-fi.) But in this hyperconnected age, all of us could stand to unplug a little. That's why we're spotlighting 17 cafes that proudly don't offer wi-fi, perfect for getting away and doing a little reading, drawing, letter-writing, and/or contemplation. Grab a cup of something warm (or a delicious pastry), turn your phone off for a minute (Twitter and Instagram will still be there when you're done), and let your mind wander.