The mathematical analogy is fragile, but the takeaway is obvious:
Customer has problem X and they suggest Y as the solution. Good product people will solve for Z, what the customer _needs_, while bad product people will provide Y, which is harmful to both the people using the product and the people building the product.
Customer has problem X and they suggest Y as the solution. Good product people will solve for Z, what the customer _needs_, while bad product people will provide Y, which is harmful to both the people using the product and the people building the product.