After watching another bit of Kent Hovind, I've got a list of possible better things for an earlier Earth....
1. Higher oxygen percentage and a more dense atmosphere equals a couple effects. 1) Endurance checks are (making up a figure here) going to be done at 3X the level you're used to.
Thus, Joe the Verser is not in great shape, and usually gets played out after a mile of running. He now can run three miles before he pants to a halt.
Fires start easier.
Higher pressure means much larger plants (fascinating story of a tomato plant that hit forty feet--the Ladyfaire has one out our front door that might, if you were generous, hit three feet....if it were properly supported maybe four.). Higher pressure probably also means bigger people.
2. Ice Canopy theory (the earth is surrouned by a thin sphere of ice held up in the magnetic fields which compresses the atmosphere...see #1) (I've heard from some people this is not generally accepted anymore, but...this is Multiverser. If I can write a world about how Ymir's body formed the Earth, I can have a hollow ice ball.)
One key effect of this is to block a lot of the radiation. Less genetic mutations and general damage. (I've heard again that radiation can actually be invigorating, but its possible to be both invigorating and overall damaging---see caffeine.)
Again, you're left with does this overall cool the Earth (albedo effect) or heat the Earth (greenhouse effect)? I'm going to go with heat because thats more fun.
So...there's the Hovind copy of Better Earth. Most guys are tall (many really tall) with extreme energy levels (four hours of sleep a night, and running to town twenty miles away as regular things.), and plants are insanely huge with the year-round growing season and the dense atmosphere.
I think this should maybe be merged with my idea for a patriarch of his nation deciding to try to bluff God by claiming to be God which I talked about a couple months ago. That would give the verser an interesting social environment.
Effects on the verser;
Good:
1. He gets an energy boost as the locals do.
Bad:
1. The local thug is ten feet tall, armed with an eighteen foot long spear with a spearhead that is a foot long (Plus for the verser, its bronze.) Mickey Spillane in 'The Goliath Bone' did a good job of portraying how nasty it would be to fight Goliath if you're a normal guy. Of course, Goliath had higher tech (iron weapons probably, and heavier armor).
2. The same local thug has been doing his 'job' for a hundred years, and he's reasonably skilled at it.
A question on the mentality of really long lived but early peoples: How do they go about training? I don't think you'd have anybody like the Samurai. Extremists of that sort would not exist. So thats a plus for the verser.
OTOH, in a hundred years, even if you only practised a half-hour a day, you might get pretty good. And you might find some skills on your own that would be eccentric and extremely individual.
I guess you'd have the advantages and disadvantages of a gifted amateurs. For comparison, the early American inventors vs. Bell Labs.
It would be an interesting world to toss the verser in too. A lot of simple in concept, but difficult in practise combats...
Roger Zelazny to some degree disagrees with me in the Nine Princes in Amber. One of the brothers is Benedict (these brothers are immortal and born very early in the history of their multiverse so they fit my question.) who is basically unbeatable with any weapon.
In other words, he's the extremist of extremists, 3@10 with any conceivable weapon.