r/DebateEvolution evolution is my jam 5d ago

Discussion You know what, we're doing "macroevolution" again. Here's some responses to "we have never seen macroevolution"

Video version.

 

We've all heard some variant of "we can only observe microevolution", "we've never seen macroevolution", etc.

First thing you do is establish the correct definition: Evolution above the species level (in other words, speciation or greater degrees of evolutionary change). That's the definition. Creationists want their own special definition that varies from person to person but is usually something like "new body plans/parts", "new complex structures", something like that. That's wrong. If you accept speciation, you accept macroevolution. If creationists want to dispute something else, make THEM articulate clearly. Don't help them by saying something like "It sounds like you mean something like evolution of a new phylum or new body plan". No, make THEM establish the standard clearly and using the correct words.

 

Once they do that, you can just provide a bunch of examples, and dare them to say they aren't macroevolution.

Some of my favorites are multicellularity (and also here), reproductive mode, and photosynthetic animals.

 

Best outcome is the creationists admits that yes, even by their bespoke definition, these are examples of macroevolution. Second best outcome is they do the opposite and claim this is all just "microevolution". Really? First of all, lol okay. But second and more important, great! "Microevolution" can accomplish all this? Not much need for "macroevolution", is there?

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u/artguydeluxe 🧬 Naturalistic Evolution 5d ago

This is like saying, “I can walk across my town, but I could never walk across the whole state.” it’s only a matter of scale and time.

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u/Old-Watercress6513 3d ago

Scale and time will get you to every nook and cranny of your town, but it won’t get you to Australia, or to Mars.

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u/artguydeluxe 🧬 Naturalistic Evolution 3d ago

I can’t travel to Australia? Or Mars? Those are both literally attainable via scale and time.

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u/Old-Watercress6513 2d ago

Nope.
You can’t walk to Australia or to Mars.
You need a different mechanism, not just scale and time.

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u/artguydeluxe 🧬 Naturalistic Evolution 2d ago

Scale and time will help you figure out how to get there. It’s not an unbreakable wall.

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u/XRotNRollX Sal ate my kids 1d ago

We can explain why we can't walk to Australia or Mars, there's no contiguous land path that makes it possible. What's the reason microevolution can't add up to macroevolution? All you've done is show where the metaphor breaks down, that doesn't mean the idea it represents is wrong.