[PU4, Powers] What does Cosmic power modifier actually do?

[the_matrix_walker]

Originally Posted by Gurps Fan

Let's take another example.

I always assumed Cosmic DR is completely immune to any mundane means to nagate it just because it's Cosmic. For instance, I thought that Cosmic DR is never wiped out by non-Cosmic Affliction (Negated Advantage), never peeled off by non-Cosmic Corrosion Attack, etc.

This is all true if Cosmic is your "Power Modifier." The Cosmic Power Modifier has a special place in the world of Powers.

Every time they specify that your Cosmic Powers cannot be taken away, they are in the midst of referencing Cosmic as a PM, and not as any specific Cosmic Enhancement.

Originally Posted by Gurps Fan

Now we're with PU4, does this assumption holds true? The description of Cosmic, Defensive, +50% (PU4, p. 7) states that this enhancement makes the ability "proof against Cosmic effects", and that the DR-reducing effect of Corrosion Attack is "part of how corrosion damage works, not a Cosmic effect".

Cosmic, Defensive, +50% is not only in PU4, it is in the BS (p. 103) Description for Cosmic "Defense or countermeasure." It negates any "cosmic" effects from the attacking power.

So yes, that makes perfect sense, corrosion effects are not cosmic, so they should operate normally.

Originally Posted by Gurps Fan

Then how does Cosmic DR behave when it meets a mundame corrosion damage? Does the DR is immune to reduction by 1 per 5 points of corrosion damage (because the DR is Cosmic and there shouldn't be no mundane countermeasure), or not (because the DR reduction is not a Cosmic effect)?

"Cosmic DR"
DR 10 (PM, Cosmic, +50%; Cosmic, Defensive, +0%) [75]
Would ignore such an insignificant corrosive effect to it's DR, it's just better than that.

but!

"DR with Cosmic on it"
DR 10 (Cosmic, Defensive, +50%) [75]

Would have it's DR corroded away normally

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