Great piece, Steve. My sole objection is your calling this "think time". I call it "dream time", and its whole purpose is to shut the thinking machine down, and allow the dream-machine its moment to flower, without considerations of practicality, time-to-develop, where it fits in with our marketing plans, and all of those considerations that hamper the flower.
On this week, or on that day per week, or however you want to slice it, the whole point is to STOP thinking inside the box, and just for once, think outside the box, just about "Wouldn't it be cool if...?" That is when great ideas are born.
Only two businesses refer to their clients as users: drug-dealing and software development.
-- Arthur Fuller