A loudspeaker broadcasting at full power over the entire range of sound would be more devastating to the Brain than a ton of dynamite exploded in its heart. There was the answer—Vibration!
But once again there was the problem of installing it, and being able to use it after a thousand years. Install it and use a clock to trigger it? That was one possibility. Clocks run by atomic power would keep accurate time over much longer periods.
But there was the problem of getting the Cyberene to agree to the installation of such a device. That was necessary. During the days that Earl had studied the Cyberene's control of his conscious mind he had found no way to gain any sort of positive control which the Cyberene couldn't shunt out at once. Therefore whatever plan he devised must meet with the approval of the Cyberene.
Tentatively he inserted a bold thought, feeling sure that the Cyberene wouldn't attribute it to him, but merely to the logical processes of his conscious mind.
What if the Brain doesn't develop along lines sympathetic to you? He elaborated upon it, feeding worry thoughts along with it. A second Brain might not follow the line of development of the first, any more than one human develops like another, even when they are twins. Rather than accomplishing his aim of having a second Cyberene on the other Earth in 3042, holding the human population in slavery, it might prove a more formidable enemy than the people of that Earth. And if that turned out to be the case, wouldn't it be better to have a trump card? Some way of destroying the second Cyberene at any time? Even if it were friendly to the first, it might want to be boss. Power of life and death over it would prevent that.
Earl's conscious mind, entirely cooperative with the Cyberene, soon began to think very dominantly along those lines. Earl sat back and waited for some reaction from the Cyberene. It was not long in coming.
At five o'clock Nadine looked him up and informed him that they were to report to the Cyberene at once.
"I have detected certain thoughts in your mind," the voice of the Cyberene sounded. "I would like to hear what you have to say."
Earl sensed his mind rallying its thoughts. "I've been wondering what the other Cyberene would be like. That's all. There's no guarantee that it will have any special traits that will make it what you want it to be, and once it's started it's out of your control, isn't it?"