Empirically Impossible

I’ve been working on a few things since finishing Probability Zero. One of those things was the release of a 10 hour and 28 minute audiobook. Another of those things was a statistical study that Athos and I just completed, and the results very strongly support Probability Zero‘s assertion of the mathematical impossibility of the theory of evolution by natural selection.

Empirical Validation: Zero Fixations in 1.2 Million Loci

The MITTENS framework in Probability Zero calculates that the actual number of effective generations available for evolutionary change is far smaller than the nominal generation count—approximately 158 real generations rather than 350 nominal generations over the 7,000-year span from the Early Neolithic to the present. This reduction, driven by the collapse of the selective turnover coefficient in growing populations, predicts that fixation events should be rare, fewer than 20 across the entire genome. The Modern Synthesis requires approximately 20 million fixations over the 9 million years since the human-chimpanzee divergence, implying a rate of 2.22 fixations per year or approximately 15,500 fixations per 7,000-year period. To test these competing predictions, we compared allele frequencies between Early Neolithic Europeans (6000-8000 BP, n=1,112) and modern Europeans (n=645) across 1,211,499 genetic loci from the Allen Ancient DNA Resource v62.0.

The observed fixation count was zero. Not a single allele in 1.2 million crossed from rare (<10% frequency) to fixed (>90% frequency) in seven thousand years. The reverse trajectory—fixed to rare—also produced zero counts, ruling out population structure artifacts that would inflate both directions equally. Even relaxing the threshold to “large frequency changes” (>50 percentage points) identified only 18 increases and 60 decreases, representing 0.006% of loci showing substantial movement in either direction. The alleles present in Early Neolithic farmers remain at nearly identical frequencies in their modern descendants, despite what the textbooks count as three hundred fifty generations of evolutionary opportunity.

This result decisively favors the MITTENS prediction over the Modern Synthesis expectation. The mathematics in Probability Zero derived, from first principles, that overlapping generations, declining mortality, and expanding population size combine to reduce effective generational turnover by more than half. The ancient DNA record confirms this derivation empirically: the genome behaves as if approximately 158 generations have elapsed, not 350. But zero fixations in 1.2 million loci suggests even the limited ceiling permitted by MITTENS may be generous—the observed stasis is consistent with a system in which the conditions for fixation have become vanishingly difficult to satisfy regardless of the generation count.

Evolution by natural selection, as a mechanism of directional change capable of producing adaptation or speciation, has been empirically demonstrated to be inoperative in human populations for at least 7,000 years.

DISCUSS ON SG


A First Challenge

And it’s not a serious one. An atheist named Eugine at Tree of Woe completely failed to comprehend any of the disproofs of parallel fixation and resorted to a withdrawn 2007 study in a futile attempt to salvage it.

Vox is wrong about parallel fixation. The post below has a good explanation. It’s telling that the example Vox gives for why parallel fixation doesn’t work involves the asexually reproducing e. coli, when the whole power of parallel fixation relies on genetic recombination.

First, that’s neither the example I gave for why parallel fixation doesn’t work nor are bacteria any component of my multiple cases against parallel fixation. Second, with regards to the square-root argument to which he’s appealing, here is why it can’t save parallel fixation:

  • It requires truncation selection. The argument assumes you can cleanly eliminate “the lower half” of the population based on total mutational load. Real selection doesn’t work this way. Selection acts on phenotypes, not genotypes. Two individuals with identical mutation counts can have wildly different fitness depending on which mutations they carry and how those interact with environment.
  • It assumes random mating. The sqrt(N) calculation depends on mutations being randomly distributed across individuals via random mating. But populations are structured, assortative mating occurs, and linkage disequilibrium means mutations aren’t independently distributed.
  • It doesn’t address the fixation problem. Haldane’s limit isn’t about purging bad mutations, it is about the cost of substituting good ones. Each beneficial fixation still requires selective deaths to drive it to fixation.
  • The sqrt(N) trick helps with mutational load, not with the speed of adaptation.
  • Worden’s O(1) bits per generation. Yudkowsky doesn’t refute it. And O(1) bits per generation is exactly the the same as the Haldane-scale limit.

The square-root argument concerns purging deleterious mutations, not fixing beneficial ones. Two different problems. The parallel fixation problem remains wholly unaddressed.

DISCUSS ON SG