During 2 years of college lecture classes one can learn what took philosophers and eventually mathematicians nearly 2000 years to discover.
This is an oddly phrased rebuttal. I don't think anybody is saying that you should try to re-play 2000 years of math, science, and philosophy discoveries ex nihilo. Rather, the suggestion is that you don't need an instructor to discover (or summarize) Euler, Newton, and Plato. You can do it on your own.
Just because the elapsed time was 2000 years does not imply 2 years of study at a fixed hourly class time is a meaningful metric for what we're talking about.
The history of discovery and how ideas were constrained in the ancient world and the time it took to discover ideas is not related to the fixed-time dedicated study of the topic. The connection is totally meaningless.
Some measure of units of information would be meaningful. Discussing discovery and the established discipline as isolated things (or describing how they could be connected in that context) is meaningful.
This is an oddly phrased rebuttal. I don't think anybody is saying that you should try to re-play 2000 years of math, science, and philosophy discoveries ex nihilo. Rather, the suggestion is that you don't need an instructor to discover (or summarize) Euler, Newton, and Plato. You can do it on your own.