Vaccines were invented before 1920, surely they had everything they needed back then? It’s like saying that modern healthcare was invented in the 1800s and the

Vaccines were invented before 1920, surely they had everything they needed back then? It’s like saying that modern healthcare was invented in the 1800s and therefore there was absolutely no meaningful progress since then. How does that sound? > created post-1970s Digital cameras? Personal computers? Note that by your bizarre standards fridges were invented in the 1830s and microwave ovens in the 1930s so innovation stopped long before the 70s or 60s.. BTW would you also agree that computers were invented in the 1830s as well? MRI was invented in the 70s but practical devices weren’t created till years later (due to advances in other fields)