"We have to buy the psionic shielding, since we don't know if they can communicate using their minds. If they can, and our minds aren't shielded, they'll probably be able to read ours. Or even control them! That would be devastating," Aron said. He definitely couldn't afford to give up the upper hand by allowing the aliens to invade the thoughts of humans.
"Plus, with the mind control defense knowledge, we might even be able to extrapolate how to control the minds of other intelligent beings."
{When it comes to kinetic weapons, we don't need to buy those. We're already far ahead in that category and we'll only continue advancing,} Nova said, resulting in Aron striking the kinetic weapons knowledge off the list.