Archaeologist: Neanderthals, a human-like species living 60,000 years ago, probably preserved meat found in many Neanderthal fireplaces.
Conclusion (probably)
Neanderthals probably preserved meat found in many Neanderthal fireplaces.
Evidence
Burnt lichen and grass have been found in N. fireplaces, and a fire of lichen/grass produces a lot of smoke but doesn't produce nearly as much heat/light as a wood fire.
Evaluate
There is a missing link assumption somewhere, since "preserved meat" appears only in the Conclusion. What is "preserved meat" attached to in the Evidence?
Apparently, we're assuming that fires that produce a lot of smoke but not a lot of heat/light are good for preserving meat.
However, since we're interpreting the significance of archaeological evidence, we could also use our Curious Fact / Explanation mindset.
Curious Fact What are all these burnt lichen/grass fires all about? They produce a lot of smoke, but they don't produce as much heat or light as a wood fire.
Author's Explanation The lichen/grass smoky fires were created to smoke meat, for preservation.
We're supposed to react to this template by considering 2 different things: - could there be an Alternative Explanation for this Curious Fact? - how plausible is the Author's Explanation?
So why else might the Neanderthals have been burning smoky lichen/grass fires? Maybe they didn't have any wood, so this was the best they could get. Maybe it kept away some predators. Maybe it was for some other cooking purpose.
How plausible is the Author's Explanation? His story assumes that there was meat around, that Neanderthals were aware that if you smoked meat it would preserve for longer, that they had any need/use for preserved meat, etc.
Goal
Since this is Weaken, we want an answer to suggest an Alternate Explanation for why they were making lichen/grass smoky fires, or to hurt the plausibility of the story that they were making these smoky fires in order to preserve meat.