We see similar patterns in the transition from Newtonian to relativistic mechanics or discursive Greek geometric algebra to symbolic Arabic equations or superstitious alchemy to physically grounded chemistry. There are thousands of other examples. It is not a general rule that all the past knowledge must be learned to create something new. Often, past knowledge is completely supplanted by a new discovery and progress can continue without increasing, and often decreasing, the necessary educational investment.
The Ptolemaic model is an extreme example. I doubt that we can actually find thousands of other huge corpus of accumulated knowledge who were later utterly trashed. Yes, students today do not learn the Ptolemaic model, because it was plain wrong. But the transition from Netwonian to relativistic mechanic is definitely not in the same reference class, since high school students today are still starting physics courses studying Netwonian mechanics, which are a very good approximation of relativistic mechanics in simplified conditions. You can’t just dismiss Newton as superseded by Einstein (and I also doubt that Greek geometry is dead).
Moreover, if you sit in the frontier of knowledge developing a shiny new model, you can’t just blatantly ignore the current model (even if it’s wrong): that luxury will belong to future scientists. The developer of the new model must also master the old one in order to explain why the new one is better.
The Ptolemaic model is an extreme example. I doubt that we can actually find thousands of other huge corpus of accumulated knowledge who were later utterly trashed. Yes, students today do not learn the Ptolemaic model, because it was plain wrong. But the transition from Netwonian to relativistic mechanic is definitely not in the same reference class, since high school students today are still starting physics courses studying Netwonian mechanics, which are a very good approximation of relativistic mechanics in simplified conditions. You can’t just dismiss Newton as superseded by Einstein (and I also doubt that Greek geometry is dead).
Moreover, if you sit in the frontier of knowledge developing a shiny new model, you can’t just blatantly ignore the current model (even if it’s wrong): that luxury will belong to future scientists. The developer of the new model must also master the old one in order to explain why the new one is better.