Part 7/9:
However, while the authors present promising insights, concessions must be made. Their calculations do not adhere strictly to the four symmetries central to Einstein's theory—raising concerns about potential deviations from established observations. While they argue these discrepancies stem only from quantum effects, skepticism remains about whether these modifications could yield observable differences.
Additionally, the approach itself is laden with complexity—navigating gravity within flat space peppered with four gauge bosons introduces challenges that could be daunting for physicists already accustomed to Einstein's images of curved spacetime.