Would humankind be today's dominant species, if all animals turned twice as big 2000 years ago?

Okay, I just asked a question, in which mother nature transformed all animals (or brain containing living beings, if that fits better for you) into a being twice as big in order for them to kill of humankind, recovering the ecosystem.

Well, with twice the heigth, length and width, it's actually eight times the size ($2^3$).

The question was, if humankind could remain as the dominant species and the answers made it clear: Yes, easily.

But it got me thinking. Would the result be the same, if all animals would have turned twice as big at the year 0?

The rules are the same:

• This transformation happened worldwide at the same time and only took about a minute.
• The physical abilities (strength, speed etc.) scale accordingly to the size and the animals are able to handle the gained mass just as good as their reallife counterparts.
• Mother Nature DO provide the earth with enough food to feed the bigger animals. After all, she wants to keep her children alive, killing only humankind. Well, carnivore don't need changes, as their prey scale accordingly. Let's just say the vegetable food grows faster, there is more of it or it provides more of whatever keeps the animals alive. (Doesn't really matter, the question is about the fight between humankind and animals)
• The earth was EXACTLY ours until the year 0.

With all that: Would humankind still be able to become the dominant species in the year 2000 (or earlier), or wouldn't they be able to handle the changes?

posted over 7 years ago

Stegax Khenacc‭

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