Consider a business as prosaic as seating for airport waiting areas. You would think that there would be a "best" here — standardized, functional seating. Well you would be wrong. Different airports have different needs. Some want waiting passengers to shop. They don't want seats that are too comfortable. Some need the flexibility to reconfigure waiting areas. They don't want long rows of fixed seats. Many airports have to watch their spending. But others — airports in the Middle East, for example — have snapped up luxury designs. Some airports value seats built to take extraordinary abuse. London-based OMK makes "prison-worthy" seating, the industry's highest standard, using self-sealing polyurethane that can withstand a stabbing without showing the knife scar.