Lucid Thinking?

Workers in Italy have established that the heat of the Mount Vesuvius eruption in AD79 turned the brain of one young male victim (possibly a caretaker) in Herculaneum into glass (https://www.theguardian.com/science/2020/jan/22/mount-vesuvius-eruption-victim-brain-glass). This is most unusual as brain tissue is rarely preserved (except as a soapy gloop) but the black shards from the skull were shown to have proteins that are only found in neural material.