Eden used old-fashioned telephones because its people were too widespread across the face of the planet to make the use of the vidphone practical. Radio broadcasting was maintained by the government as a public service information agency. It had to be. There were not commercial enterprises enough to support radio broadcasting on a profit-making basis. For there simply were not enough people. And if simple radio broadcasting could not be supported, there was not yet room for even the old flat-faced television, much less trivideo. Theirs was a culture in a mixed state. They had the know-how for a highly technical, closely-integrated urban civilization, but lacked the hardware necessary to construct it. They were an aircar people, but they used horses. Horses can be raised. Aircars have to be fabricated. It would not have been prohibitive to trans-ship the basic tools and dies for aircar assembly from Earth, Sol, to Eden, Tau Ceti. But it would have been economic suicide to attempt to keep the voracious maw of an automated assembly plant satiated with raw material shipped from home base. And then, one week's run would have saturated the Tau Ceti market. They were a people who played their own musical instruments because they were faced with the very odd economic fact that the first phonograph record from the die costs five thousand dollars. Nobody makes a dime until fifty thousand of its brothers are sold. The population to buy fifty thousand did not exist. In simple fact, Eden, Tau Ceti, was far from a flourishing colony. It was a classic example of the simple economic truth that a fully integrated mechanistic society can not be supported by a sparsely populated region. * * * * * Ambition has many origins. The urge to return home became a drive. The result was Junior Spaceman Howard Reed's complete preoccupation with the mathematics known as Hansen's Folly. As the months went by he exhausted his original knowledge. He took to the library, to the local schools, and to self-study to improve his grasp. He approached the basic mathematics of the space drive from several different angles, even going back to the old original Einstein Equations and learning their fault in the hope that this study might point the way. Then, as the months began to grow into the close of his first year, Reed took advantage of the casually informal operation at the Space Service Base. He began to experiment with hardware on the theory that he would have a better grasp of the problem if he tried some empirical work as well as the academic approach.