We're always told to think outside the box. But it's about time someone spoke up for the box. Because, paradoxically, thinking inside a box can spark creativity, not squelch it. So maybe you don't need to think out of the box. Maybe you just need a new one to think in. For instance, let's say you manage a bank. Your top marketing person comes to you with an idea to redesign the service areas of the bank. He says, "We want the bank to be less formal--hipper and more inviting to our young professional customers." Quick: How do you envision the new space? What do the light fixtures look like? What color are the walls?Your mind is probably a blank. Perhaps that's what people seek when they ...