Page 211 - Enders_Game_Full_Book

"That's right. Missiles wouldn't do any good now. We learned a lot from them in the First Invasion, but they also learned from us -- how to set up the Ecstatic Shield, for instance."
"The Little Doctor penetrates the shield?"
"As if it weren't there. You can't see through the shield to aim and focus the beams, but since the generator of the Ecstatic Shield is always in the exact center, it isn't hard to figure it out."
"Why haven't I ever been trained with this?"
"You always have. We just let the computer tend to it for you. Your job is to get into a superior strategic position and choose a target. The shipboard computers are much better at aiming the Doctor than you are."
"Why is it called Dr. Device?"
"When it was developed, it was called a Molecular Detachment Device. M.D. Device."
Ender still didn't understand.
"M.D. The initials stand for Medical Doctor, too. M.D. Device, therefore Dr. Device. It was a joke." Ender didn't see what was funny about it.
***
They had changed the simulator. He could still control the perspective and the degree of detail, but there were no ship's controls anymore. Instead, it was a new panel of levers, and a small headset with earphones and a small microphone.
The technician who was waiting there quickly explained how to wear the headset.
"But how do I control the ships?" asked Ender.
Mazer explained. He wasn't going to control ships anymore. "You've reached the next phase of your training. You have experience in every level of strategy, but now it's time for you to concentrate on commanding an entire fleet. As you worked with toon leaders in Battle School, so now you will work with squadron leaders. You have been assigned three dozen such leaders to train. You must teach them intelligent tactics; you must learn their strengths and limitations; you must make them into a whole."
"When will they come here?"
"They're already in place in their own simulators. You will speak to them through the headset. The new levers on your control panel enable you to see from the perspective of