I've added all the TD material to the errata; you can find that there, including the danger space discussion.
In addition, you will find there is NOW a piece of errata saying:
"If a target is completely enclosed in armor, and if the penetration is less than one-tenth of the target’s “lightest” armor value, ignore exceptional success. Your hit cannot do any damage to the target, regardless of the type of attack (hand-to-hand, direct, or indirect fire). (This prevents a small animal attacking with just its teeth from knocking out an opponent in battle dress.)"
So, you always ignore zero penetration exceptional success if you are wearing armor.
There's a lot of additions to this new errata. Please review
And Hyphen - I'd been trying to avoid inferences, but your fixes are too good to ignore. Can I have permission to incorporate them into the errata with attribution?
In addition, you will find there is NOW a piece of errata saying:
"If a target is completely enclosed in armor, and if the penetration is less than one-tenth of the target’s “lightest” armor value, ignore exceptional success. Your hit cannot do any damage to the target, regardless of the type of attack (hand-to-hand, direct, or indirect fire). (This prevents a small animal attacking with just its teeth from knocking out an opponent in battle dress.)"
So, you always ignore zero penetration exceptional success if you are wearing armor.
There's a lot of additions to this new errata. Please review
And Hyphen - I'd been trying to avoid inferences, but your fixes are too good to ignore. Can I have permission to incorporate them into the errata with attribution?