Unlike chemistry or physics, evolutionary biology is politically weaponized science.
The bump was originally discovered by the celebrated British sculptor Thomas Woolner, who informed Charles Darwin about it.
Darwinists point to similarities across species, classes, and phyla, and argue that this shows we’re all descended from a common ancestor.
There are conflicting evidences, a lack of details, opposing hypotheses held with great confidence, and a wide range of explanatory mechanisms that are routinely used as needed.
You’d likely predict: This will largely be about the timing of our primordial fire use. There will be comparisons with chimps.