Calculus (and even calculus pedagogy) hasn't meaningfully changed in the past decade. You can still teach students the basics of chemistry or art history with a

Calculus (and even calculus pedagogy) hasn't meaningfully changed in the past decade. You can still teach students the basics of chemistry or art history with an older book. Yes, some classes like genetics, epidemiology, and c++ teach content that's been completely reinvented in that time, but the majority of 100-200 level classes could easily use older books rather than requiring Pearson's latest edition.