But if your toaster ALWAYS ruined your toast, and you kept putting bread in it for, say, seventy years, and every single time it made a burned mess you say "But the toaster is supposed to make toast, it was designed with the intention to make toast, this burned mess is just bad luck/an unintended side effect/the result of a few bad apples" - then your epistemological paradigm might be lacking.
But if your toaster ALWAYS ruined your toast, and you kept putting bread in it for, say, seventy years, and every single time it made a burned mess you say "But the toaster is supposed to make toast, it was designed with the intention to make toast, this burned mess is just bad luck/an unintended side effect/the result of a few bad apples" - then your epistemological paradigm might be lacking.