Talk:Unperceivable Attacks/@comment-26517627-20151217223259/@comment-24053170-20151218193418

Limitations for absolute defense-

"Defense may require user to actively maintain at all times."

"May require user to remain stationary in order for defense to withstand."

They can't block unperceivable attacks, even if they wanted to as there is no way to tell how or when the attack would hit, so you couldn't raise a defense to avoid it or block it.