The blog post is brand new, although the discussed paper was published last year:
Schizophrenia Is the Price We Pay for Minds Poised Near the Edge of a Cliff (Blog post, Awais Aftab, 10 May 2025)
This post discusses cliff-edged fitness functions by Randolph Nesse (psychiatrist and one of the founders of evolutionary medicine) and the 2024 paper, “The cliff edge model of the evolution of schizophrenia: Mathematical, epidemiological, and genetic evidence,” by Philipp Mitteroecker and Giuseppe Pierpaolo Merola.