Talk:Conceptual Attacks/@comment-99.150.240.80-20121119215205/@comment-5649081-20121206164135

It's implied that beings that are very old can build up a resistance to conceptual attacks. In Tsukihime, Arcueid stated that she was immune to most Conceptual Weapons, by virtue of having experienced them before and being 800+ years old.

In general, however, conceptual attacks are resisted on a case-by-case basis, often with specific preparation. In Kara no Kyoukai, Araya Souren was resistant to the Mystic Eyes of Death Perception because of the sarira embedded in his left arm, which are the remains of cremated buddhist monks. Because they required a higher understanding of death, Shiki wasn't able to see their lines until activating her third personality, which was the root of all existance (with an understanding of everything). Kotomine also bypassed Kiritsugu's Origin Bullets in Fate/Zero by using Command Spells as one-shot thaumaturgical crests in place of his own magic circuits, so that the severing and binding wouldn't target his body.

So basically, if you're looking for an end-all "immune to conceptual attacks" barrier, I think the only answer is "being really, really old", and even then I'm not sure if that's enough because the Aristoteles were still succeptible to the Black Barrel, and those guys average at least a few millenia in terms of age if O.R.T. is a point of reference. But if you're looking to block a specific conceptual attack, there might be a way around it depending on how it works.