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Yes. But years ago, there wasn't that many people who could lift that much weight.
How did you come to this conclusion?

There have been "strong man" competitions since the mid-1800's. Not to mention people in the "olden days" did the kind of back-breaking labor we couldn't even imagine now.

There have always been exceptionally strong people.

"Let us remember that there is a creative force in this universe, working to pull down the gigantic mountains of evil, a power that is able to make a way out of no way and trasform dark yesterdays into bright tomorrows. Let us realize the arc of the moral universe is long, but it bends toward justice."
-- Martin Luther King Jr.