Nobel Prize-winning Hungarian biochemist Albert von Szent-Györgyi once made the pithy observation that "Discovery consists of seeing what everyone else has seen, and thinking what no one else has thought."
I think that's really what sets apart the scientists from the rest of us -- that ability to go from "wow, that's weird!" to "... and here's how I think it works." But there's another piece, too, that has unfortunately been lost over time through the sad fact of increasing specialization within the sciences.
And that's the ability to be conversant in a great many different disciplines, and the capacity for drawing connections between them.
Another accurate observation -- this one, I haven't been able to find an attestation for -- is that "Researchers these days are learning more and more about less and less, until finally they're going to know everything about nothing." One of my mentors, science educator Roger Olstad, called this "focusing on one cubic millimeter of the universe," and said that generalists make better teachers, because they can draw on information from lots of disparate fields in order to make sense of their subject for students. Fortunately for me; I'm an inveterate dabbler. I'd have been a lousy candidate for a doctoral program, because I don't seem to be able to keep my mind locked on one thing for five minutes, much less the five years or more you have to focus in order to research and write a dissertation.
What's kind of sad, though, is that it hasn't always been this way. Before the twentieth century, scientists were almost all polymaths; it behooves us all to remember that the word science itself comes from the Latin scientia, which simply means "knowledge." Consider, for example, the following advances, all made in the latter half of the seventeenth century. Do you know who was responsible for each?
- Made the first accurate measurements of motion of Jupiter's Great Red Spot, allowing the astronomer Giovanni Cassini to calculate the planet's rotational period
- Deduced the law of elasticity -- that for springs (or other elastic objects), the linear extension is directly proportional to the force exerted
- Made the first-ever drawing of a microorganism (the fungus Mucor)
- Figured out that the optimum shape for a weight-bearing dome is exactly the same as the curve of a hanging chain, only upside-down (the inverted catenary), revolutionizing architecture
- Was the first to note that venous and arterial blood differ in appearance, pressure, and composition
- Determined that the force of gravitation is an inverse-square law
- Figured out (through microscopic analysis) that petrified wood retains the cellular structure of the living wood it came from
- Studied waves in two-dimensional plates, and was the first to observe their nodal patterns (now called Chladni figures after an eighteenth-century physicist who did an extensive analysis of them)
- Built the first balance-spring pocketwatch
- Coined the term cell after seeing the microscopic holes in thin slices of cork, and likening them to the monks' quarters (celluli) in a monastery
- Concluded, from studying lunar craters, that the Moon must have its own gravity
- Was the first to analyze schlieren, the streaks caused when two transparent fluids with different indices of refraction mix (such as heat shimmer over a hot roadway, or when you stir simple syrup into water)
- Speculated that there was a specific component of air that allowed for respiration in animals -- and that both respiration and combustion gradually removed whatever that component was
- Developed the first clockwork drive for telescopes, allowing them to compensate for the Earth's rotation and track the movement of astronomical objects











