'The greatest challenge of science, its art, lies in asking an important question and framing it in a way that allows it to be broken into manageable pieces, into experiments that can be conducted that ultimately lead to answers. To do this requires a certain kind of genius, one that probes vertically and sees horizontally.
Horizontal vision allows someone to assimilate and weave together seemingly unconnected bits of information. It allows an investigator to see what others do not see, and to make leaps of connectivity and creativity. Probing vertically, going deeper and deeper into something, creates new information. Sometimes what one finds will shine brilliantly enough to illuminate the whole world.
At least one question connects the vertical and the horizontal. That question is "So what?" Like a word on a scrabble board, this question can connect with and prompt movement in many directions. It can eliminate a piece of information as unimportant or, at least to the investigator asking the question, irrelevant. It can push an investigator to probe more deeply to understand a piece of information. It can also force an investigator to step back and see how to fit a finding into a broader context. To see questions in this these ways requires a wonder, a deep wonder focused by discipline, like a lens focusing the sun's rays on a spot of paper until it bursts into flames.'
From 'The Great Influenza' by John Barry.