QUOTE (Dakka Dakka @ Nov 14 2008, 12:07 PM)

Correct.
This is where you are wrong. It does not provide bonus dice to certain tests. It increases the Attribute for certain tests. There has to be a difference since there are also devices that exactly provide extra dice to dicepools (e.g. smartlink). If the developpers actually meant it as a simple dicepool bonus they could have simply removed the word Reaction in the combat sense description and Body in the Bone Density description.
Btw. does anyone know if there are developpers among the members of dumpshock, so we could get an official ruling?
Emphasis mine.
SR4, 187, "The character gains one
die per level for Reaction on Surprise Tests and when defending against ranged and melee attacks."
SR4, 333, "Plastic bone lacing confers a
bonus of +1 to the Body attribute for damage resistance tests. Aluminum bone lacing confers a +2 Body
bonus for damage resistance tests and a +1 Impact armor bonus (cumulative with worn armor). Titanium bone lacing confers
bonuses of +3 to Body for damage resistance tests and +1 to both Ballistic and Impact armor. "
It does provide bonus dice to the tests. Combat sense explicitly states it is an extra dice per level of the ability, and not an increase to the attribute. Bone lacing explicitly states this is a bonus to the attribute, and not increasing the rating.
I can see a very clear reason for having it explicitly add to the body section of the damage resistance test. Armor. If it simply said "adds 4 dice to the damage resistance test" and i call a shot to avoid armor, do those 4 dice count as armor, and are negated? Or do they count as body, and remain? Obviously, they count as body and would remain. But only because they had the foresight to specifically state that it added to the body part of the test.