[Ariarule]

1974 was over a half-century ago; it is extremely weak evidence with everything that's changed since then, at best.

[quuxplusone]

https://en.wikipedia.org/wiki/Permanent_time_observation_in_...

Interestingly, DST itself had been standardized by the Uniform Time Act of 1966 less than a decade before that!

IMHO seems like permanent standard time would have been the more logical route (apparently it could have been done at the state level under current federal laws), but "more logical" doesn't always mean "easier to accomplish."

[davesque]

Not sure I follow. I can't imagine humanity has evolved much since 1974.

[Ariarule]

While human biology hasn't changed in any meaningful sense, technology and US culture have changed dramatically.