>     Traditional wisdom and some rather questionable academic "research" 
>
> so why are they against the much more reasonable answer of kilns? 

And what about wildfires?

Reminds me of an archeologist who supposedly planted chewed corn cobs in 
a closet so that he could fabricate a story about how the house was a 
waypoint of the underground railroad. Thus developing a story line to 
support preservation of the otherwise unremarkable old house, and 
boosting said archeologist's career.

][<

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