Of course, what they didn't know was that it wasn't that the Big Mosquito didn't want to use Smart Brains to replace manual labor in piloting spaceships, but the uncertainty of Smart Brains was just too great.
These were things the aliens had verified through bloody experiences in the past. Jia Yan had once wondered why, given that the smartness of alien Smart Brains was unbelievably powerful, there were hardly any Smart Brains controlling battleships or even commercial spaceships. After learning about it, he found out that there had been countless past 'incidents' that eventually led to the demise of Smart Brain-operated spaceships and a few unique industries.
Naturally, Jia Yan wouldn't allow such hidden danger. Moreover, developing Smart Brains was not something his scientists were proficient at, so he chose to recruit pilots from the humans on Earth. There was even a plan for combat spaceship pilots in the future, but that would have to wait until conditions were ripe.