The path to progress is rarely linear. It might help to visualize smuba as a series of gears on a five-speed bicycle. Seeing is the first gear to trigger forward movement. Its utility never goes away, but as the landscape changes, it yields to subsequent gears. And, of course, engaging any gear just once isn’t sufficient. One data grab isn’t enough to create a trustworthy map. Think about the 1804 map that Lewis and Clark created for Jefferson: it was as impressive as it was incomplete. Completing the map of the United States took decades of additional data-gathering missions. The same holds true during the understanding process.