As an avid coffee-lover, I am sympathetic to the efforts to make coffee-brewing more of a science than an art. After all, it seems that doing so improves science just as much!
https://today.ucsd.edu/story/coffee-and-turbulenceThat said, I am less sympathetic to the concept of a "perfect cup", which seems to make coffee an exclusively competitive endeavour. I mean, why not enjoy coffee-brewing as one might enjoy thinkering?