If he means formula in that narrow a sense, then his larger point is mistaken. Most of being a good doctor is not reducible to formulas either, but that doesn'

If he means formula in that narrow a sense, then his larger point is mistaken. Most of being a good doctor is not reducible to formulas either, but that doesn't prevent medical schools from working. Only a small fraction of what humans learn consists of formulas in the narrow sense. And an even smaller fraction of the most valuable things they learn.