Introverts tend to draw their energy from long stretches of alone time. To determine whether you might be an introvert, see if you can understand these 27 problems.+Susan Cain, author of Quiet: The Power of Introverts in a World That Can’t Stop Talking, understands how introverts must suffer amid the loud munching on Trader Joe’s paneer tikka and the cacophony of the “ideation sesh” unfolding a few desks over. She has partnered with Steelcase, the office furniture maker, to create new types of office spaces that will allow introverts to both work and respite in peace. Some of the new modules will house desks, others will contain couches, and others still will have yoga mats. All will have walls.