An apple falls in front of Newton, a pot boils before Papin, a flaming sheet of paper floats before the eyes of Montgolfier. At intervals a discovery bursts forth like a mine explosion in the deeps of science, and a whole ledge of prejudice crumbles, and the living rock of truth is suddenly laid bare.

Common sense iz like biled vittles, it is good right from the pot, and it is good nex day warmed up.

Don't go to the doctor with every distemper, nor to the lawyer with every quarrel, nor to the pot for every thirst.

Occurrences that other men would have noted only with the most casual interest became for Whitney exciting opportunities to experiment. Once he became disturbed by a scientist's seemingly endless pursuit of irrelevant details in the course of an experiment, and criticized this as being as pointless as grabbing beans out of a pot, recording the numbers, and then analyzing the results. Later that day, after he had gone home, his simile began to intrigue him, and he asked himself whether it would really be pointless to count beans gathered in such a random manner. Another man might well have dismissed this as an idle fancy, but to Whitney an opportunity to conduct an experiment was not to be overlooked. Accordingly, he set a pot of beans beside his bed, and for several days each night before retiring he would take as many beans as he could grasp in one hand and make a note of how many were in the handful. After several days had passed he was intrigued to find that the results were not as unrewarding as he had expected. He found that each handful contained more beans than the one before, indicating that with practice he was learning to grasp more and more beans. “This might be called research in morphology, the science of animal structure,” he mused. “My hand was becoming webbed … so I said to myself: never label a real experiment useless, it may reveal something unthought of but worth knowing.”