Blunt vs Impact damage?

[jmosher]

Could someone explain why we have both blunt and impact damage in the game? I am trying to wrap my mind around the distinction and just can't. Is there some subtle balance issue between (say) a Pillager's net and a Troll's club? If so, could we change "blunt" to "tangle" to make a more obvious semantic difference? If there is no strong reason to have different resistances, could we please replace "blunt" with "impact"?

[Dave]

There is no 'blunt' damage type in the game, only 'impact'.

A couple of units (Dwarvish Berserker, Yeti), mistakenly listed resistance against this mythical 'blunt' damage type in their files; I have corrected this.

David