Reading your objections is like listening to my son explain to me that objects with darker colors fall faster than objects with brighter, lighter colors.
“Fitness” is calculated on “averages”. There is “noise” in every system, and there is nothing noiser than the wilderness. But like anything else, even noise can be quantified and compared.
Typically fitness is calculated as “the number of offspring (directly and indirectly) produced by sub-groups representing various categories of traits.”
The mathematics can be applied to just one trait, or a combination of two traits, or any other measurable trait.
How do we know? We know just by looking at the fast-forward photography of microscopic bacteria!
Remember this ?
How many times are you going to bombast your audience with your rejection of something as obvious as Natural Selection? There are even Creationist institutions that recognize the validity of Natural Selection. There objections are not based on Natural Selection being meaningless - - but on the issue of Time - - with 6000 years of Earth’s history being impossibly short of Natural Selection to create new species, let alone new Phyla of creatures.
Are you accusing these Creationist groups of being lunatics because they concede the validity of Natural Selection?
Only 8 days ago I wrote this (to you!!!) in the thread linked above:
“Please do not repeat the same error by claiming natural selection is meaningless.”
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This youtube video includes schematic lines clearly showing how “natural selection” has obliterated colony after colony, while the surviving populations are the sources of new innovation for surviving the next higher concentrations of anti-biotics!
Watch the video linked below:
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Please take a nap and sleep on it…