Alchemy, Alchemy, they've all got it Alchemy!
Not only am I having trouble providing a noble with three demanded lay-pewter items, because when I've constructed (say) goblets from Lay Pewter bars, they turn into gold and the noble ignores them, but a Bonecrafter also went moody, gathered a stack of 9 mountain goat bones (and that's all) and was able to create an Iron Figurine of Dwarfs out of it...
The latter I don't mind ("Carve bone bolts"=>stack of Iron bolts?, hmm, I wonder...), but the former could be troublesome, especially as I'm low on wood (don't want to routeably tap into the underground caverns, just yet, until I'm prepared to deal with hostile force sitting there), not yet got down to the magma and had to charcoalify some of my precious arboreal stock already to smelt the metal I already used, so I can't experiment too much to see whether I can get something else to become Lay Pewter (sounds like I couldn't, anyway), short of modding in a custom game reactions.
I don't know if it's related, but I just dabbled (separately from the above event, and without touching the actual "Alchemy" skill, which so far I've not even bothered in any form, even if it had been relevent) with the latest Dwarf Therapist, set up for my verison of .08, with a config file partly self-derived, with the last address needing grabbing from a recent forum post (though I need to go back to that thread to see if there was an update, from past use, I thought there was a military tab as well) and some of the "Current task" infos were totally unrelated to anything the given dwarf was doing. Something like (though I forget exactly) saying they were making rope-reed vests instead of making stone crafts. Probably a separate issue, though. And most jobs seem to be accurate.