Similar for music and other arts. Despite the lack of science, the successful teachers tend to produce the best students (or they wouldn’t be successful). Yes, this forces each new teacher to start from scratch, but old, good teachers should be fairly trustworthy after years of internalized, natural experiments.
The state of exercise science is absolutely deplorable. You’re stuck with what coaches who train athletes say after having trained lots of people.
Similar for music and other arts. Despite the lack of science, the successful teachers tend to produce the best students (or they wouldn’t be successful). Yes, this forces each new teacher to start from scratch, but old, good teachers should be fairly trustworthy after years of internalized, natural experiments.