Whenever anything really practical has been invented, it has been done by a person without practical knowledge of that particular subject. Take, for instance, the modern postage stamp. It would be most natural to assume that it was invented by some practical post office official. It was not. At the beginning of the last century it was a complicated affair to mail a letter. In order to dispatch a letter one had to go to the nearest receiving office where various books had to be referred to and many other formalities complied with. The uniform rate of postage known today is hardly sixty years old, and our present postage stamp that makes this possible was not invented by a practical postal employee at all but by someone completely outside the post office. This was the Englishman, Rowland Hill.
After the uniform system of postage stamps had been devised, the English minister who then had charge of the mails declared in Parliament that one could not assume any simplification of the system would increase the volume of mail as the impractical Hill anticipated. Even if it did, the London post office would be entirely inadequate to handle the increased volume. It never occurred to this highly “practical” individual that the post office must be fitted to the amount of business, not the business to the size of the post office. Indeed, in the shortest possible time this idea, which an “impractical” man had to defend against a “practical” authority, became a fact. Today, stamps are used everywhere as a matter of course for sending letters.
Source: Rudolf Steiner – GA 108 – Practical Training In Thought – Carlsruhe, January 18, 1909
Translated by Henry B. Monges and revised by Gilbert Church, Ph.D.