Particle_Man said:p. 43 "You can make a critical hit with a strike, and in a few cases, a critical hit grants you additional benefits. You do not multiply extra damage from a strike with a successful critical hit. You treat it just as you would extra damage from another special ability, such as sneak attack."
I see no distinction here between bonus damage points or bonus damage dice. It seems to indicate that neither is multiplied on a critical hit. Has this been erratta'd?
No. But the question is, "Is the damage from Insightful Strike a bonus?". I say no since, bonus implies EXTRA, but there is no base damage to assign a bonus TO with that particular strike.
For other manoeuvers which just add +xd6 or +x points of damage, this is obvious, but Insightful Strike? Strike of perfect clarity though? That explicitly mentions it is a bonus so I think there should be no multiplier effect.
That said, in the D&D system, bonus non-die damage _IS_ multiplied on a critical. Bonus damage DIE aren't and that's where the problem comes.