I hear what you are saying and this story is more tongue-in-cheek than trying to put down computer science or professors.

But, fyi, this tagger was not just a professor's demonstration, it was kind of ground-breaking and served as a foundation for other taggers. The professor went on to have a pretty awesome career at a few different big tech companies, far surpassing my own success. And yes, I agree, I am sure he could have made it faster himself had he dedicated the time to it.