No one should underestimate the importance of observation as a source of constructive imagination and idea suggestions.
As we stated earlier, everyone in search of ideas should cultivate first of all the habit of careful observation. This habit is essential to clear thinking. Ideas gained through observation are usually of the most vivid kind and appear to be much more definite and specific than those acquired by other means. Observation has been the source of good ideas ever since man arrived on this planet.
The primitive seemed a poor competitor against the powerful animals that were his rivals in the fight for survival. They had greater size, strength and speed, tougher claws and many other powers besides which his assets were weak and puny. But by means of his constructive imagination, well backed up by observation, these obstacles were overcome by man and he was able to outwit his adverse conditions. What Nature had denied him in physical powers, he supplied to himself through the exercise of such of his thinking as he could make dynamic and constructive.
Seeing the claws of animals, he took for his own use the idea of the rake and the hoe. He created artificial claws and teeth; imitating those he saw the animals possessed, making them in the form of spears, knives, axes and other tools.
From the woodpecker he visualized the gimlet; from the beaver the trowel; from the rolling log, a wheel to drag his burden. Seeing a floating log, he imagined the idea of boats to carry him across the water. And in turn, he imagined step by step all the ingenious improvements, comforts, buildings, clothes, foods, tools and inventions that have kept him alive and advancing through the ages.
As a general rule, Nature did it first. The spider taught us to spin. The human eye gave us the principle of the camera. The arm taught us about levers. The sun and moon suggested ways to measure time. A large leafy twig was the first sunshade. A sea shell was the first spoon. The fish, ages later, was model for the submarine, and the bird founded the aviation industry.