He had me up to wading into the water. That seems unwise, and unnecessary when you could shut off the breaker first. Also, as I assume others have pointed out,

He had me up to wading into the water. That seems unwise, and unnecessary when you could shut off the breaker first. Also, as I assume others have pointed out, modern toasters are both electrical and electronic devices; I expect they wouldn't handle the dishwasher quite as well as older ones did. Generally though, 100% on board with the author's point about strident repetition of common "wisdom".