Stopped learning. Physics classes at my college were about 12 students. CS and math would be about 20-30ish, History and English and Psychology classes were about 40-60, PoliSci could be upwards of 100. I don't think any science or math course there ever filled up. There was zero barrier to anyone wanting to take a physics course or be a physics major, other than the work being really hard.
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Stopped learning. Physics classes at my college were about 12 students. CS and math would be about 20-30ish, History and English and Psychology classes were about 40-60, PoliSci could be upwards of 100. I don't think any science or math course there ever filled up. There was zero barrier to anyone wanting to take a physics course or be a physics major, other than the work being really hard.