The document discusses how tension is necessary for attention and marketing. It outlines three typical sources of tension: 1) contrasting needs within consumers, like health vs enjoyment, 2) cultural tensions in society, and 3) tensions within or between companies. The document advocates for "alchemy" in resolving tensions by combining opposing elements, like McDonald's did with its McWrap by combining fast food with a made-to-order feel. An overarching message is that tension is everywhere and marketers can harness it through strategic choices that balance opposing needs or perspectives.