So the heart strand. If it triggers obidence in specific people, is that on a first come first serve basis? Using JW as an example here:
He gets the heart strand of the illness.
Morrigan tells him "Take care of yourself"
Maya (or whoever else) tells him "Put rat poison into baked goods and give them away."

Would he follow both or neither or does it boil down to how he'd act without the disease?