So now, having reread the Blood-Brain Barrier entry, I am curious.
Do the other Presidium powers not have psychedesign, or is there something else that reassures the Worlds that they won’t use it in the way that the mad elves of the Empire would, post-conquest? Otherwise Alvis Antarianus’ suggestion that they try getting the waserai to take on the Iltine Union instead makes no sense.
(I think we can leave the Photonic Network out of consideration - while they would have a good grasp of the theory they wouldn’t have any interest in debugging meat.)