Historically and even today, there's been plenty of variation in the _interpretation_ of that imperative. As the article says, the current behaviour is very muc

Historically and even today, there's been plenty of variation in the _interpretation_ of that imperative. As the article says, the current behaviour is very much a pretty recent invention. We just act like it was always this way. Fiduciary responsibilities were just as well served in the fifties as they are now.