My father was a plumber. A true trades/craftsman. Big new construction projects were deskilled with "installers" who were mostly under the table immigrants. The

My father was a plumber. A true trades/craftsman. Big new construction projects were deskilled with "installers" who were mostly under the table immigrants. The warranty claims on $800K became a cottage industry. Custom homes, commercial, and repairs still require skill and experience as far as I can tell.