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Bart's computers told him they were forging toward the sidereal location assigned for the first of the warp-drive shifts, which would take them some fifteen light-years toward Aldebaran. On the final watch before the warp-drive shift, the medical officer came around and relieved the Mentorians from duty. Bart watched them go, with a curious, cold, crawling apprehension.

Loomis, senior assistant, who looked after current business, a proof-reader and a messenger. All the computers, including even one copyist, did their work at their homes. A couple of changes had to be made in the interest of efficiency.

Putting the asteroid into an orbit around earth was actually the most delicate part of the whole trip, but Rip wasn’t worried. He had the facilities of Terra base within easy reach by communicator. He dictated his data and let them do the mathematics on the giant electronic computers.

The genetic decoders in bioengineering laboratories, computer-aided design tools used by engineers, vast database management systems in place in corporate offices, computer-controlled machines enabling composite materials, and the countless academic, business, and personal computers are all evidence of the prominent and ever increasing role information technologies have assumed in modern economies.

To compute the movements of thousands of stars, all moving at different speeds in different directions in the vast swirling directionless chaos of the Universe and yet to be sure that every separate movement would come out to within a quarter of a mile! It was something that no finite brain man or Lhari could ever accomplish, yet their limited brains had built these computers that could do it.

Could be only one of two things. Either the whole works has folded up in which case we are going to be scattered in very small pieces all over the landscape, or the computer is saving itself for one last effort. I hope that's it. They build computers smart these days, all sort of problem-solving circuits. The hull and engines are in good shape but the controls spotty and unreliable.

Liners we can check." "Sorry," Trigger said meekly. "I'm still new at this business." "And thank God for that!" said Quillan. "If you have the time and the money, it's also a good idea, of course, to zig a few times before you zag towards where you're really heading. Actually, I suppose, the credit for picking you up so fast should go to those collating computers." "Oh?" "Yes."

Radio telescopes, both on land and aboard the ships of the task force, were following the missile's progress as it drew closer to earth. All were feeding a steady stream of information to the ships' computers. "How soon will you fire the retro-rockets, Tom?" Admiral Walter inquired presently. "In about ten seconds, sir," Tom replied, eying the sweep second hand of the clock.

The radar bowls atop the roof they seemed almost invisibly small compared with its vastness wavered and shifted and quivered. Completely invisible beams of microwaves lanced upward. Atop the Shed, in the communication room, there was the busy quiet of absolute intentness. Signals came down and were translated into visible records which fed instantly into computers.

A technical analysis program is useless without a stock exchange or if its mathematically erroneous. Yet, the two concepts are often confused because they are both mediated by and reside on computers. It is, therefore, by definition, a virtual reality. It is versatile and can correlate its reality with the world outside. But it can also refrain from doing so.