Aging as a Continuation of development

A framework for a more positive view of the aging brain is offered by Fernandez et al., in an article in the "Perspectives on Psychological Science" journal. Here is their abstract: 

Prevailing theories of cognitive aging depict late life as a period of compensatory decline—an effort to preserve performance despite progressive neural deterioration. We propose instead that aging represents a continuation of development: a genetically conserved, adaptive reorganization of memory systems that parallels the brain’s earlier-life transitions. Drawing on convergent molecular, network, behavioral, and comparative evidence, we argue that the well-documented decline in episodic-memory precision reflects a deliberate recalibration of plasticity from hippocampal to cortical circuits, favoring semantic integration and schematic stability over rapid encoding of novel details. This shift, we suggest, is not a workaround for loss but an evolved optimization suited to the cognitive ecology of late life, when accumulated knowledge, social insight, and intergenerational teaching become primary adaptive functions. The resulting semantic mode of cognition supports narrative coherence, emotional regulation, and wisdom, distinguishing normal aging from pathological derailments such as Alzheimer’s disease. We outline testable predictions across longitudinal, neuroimaging, and computational domains and reinterpret constructs like cognitive reserve as expressions of this developmental reallocation. By reframing aging as purposeful maturation rather than compensation, the adaptive-aging hypothesis positions late-life cognition as a distinct, evolutionarily honed phase of human development. 

Who Broke the World? Who are the villains?...Where do we not want to be?

I want to point to one of Nate Hagens' "Great Simplification" essays I found interesting. Hagens lays out eight distinct "lenses" through which people assign blame for civilizational crisis — political, religious, class, technological, community, animist, overshoot, and thermodynamic — each pairing a villain with a satisfying task for fixing things. (This eight-lens carving is Hagins' own construction, there could be different slicings.) The last two lenses, overshoot and thermodynamics, implicate everyone rather than a villain and offer no simple fix, which makes them logically the strongest candidates but psychologically the least persuasive. He argues that durable solutions need to work across several lenses simultaneously. The article provides a taxonomy or map of why different ideological camps talk past each other on existential-scale problems, tied to a psychological explanation (villain-seeking) rather than a policy argument. 

And to add on even more cheerful reading to this post, I pass on John Walter's "The 5 Places In America You DON’T Want To Be When Society Begins To Collapse". Five places stand out: 1. The  Washington DC to Boston corridor: 50 million American  in 2% of the nation's land mass trapped by interdependence. 2, California's Agricultural Mirage: Los Angeles and the Central valley when the water stops.  3. Florida's Sinking Peninsula: The Physics of Water and Salt. 4. The Desert Southwest: Phoenix and the Thermodynamic Ceiling. 5. The Industrial Midwest: Municipal failures when the pensions run dry (as in Chicago).