Evolution & Selection
Natural selection explains how organisms adapt and diversify once reproduction is established. This section explores where cumulative selection is powerful — and where early biochemical constraints limit what it can explain about life’s origins.
How Selection Works
The minimal logic: variation, inheritance, differential reproduction — plus what selection presupposes.
Open page →Cumulative Selection
How incremental improvements can make the improbable probable — provided intermediate steps are selectable.
Open page →Enzyme Selection
Why selecting for new enzyme sequences is harder than selecting for traits in already-functioning organisms.
Open page →Constellative Catalysts
Systems where multiple components must work together before any benefit appears — a challenge for stepwise selection.
Open page →Translation First or Selection First?
A dependency puzzle: selection needs heredity machinery, but heredity machinery is itself a product of selection.
Open page →Where Selection Meets the Origin Problem
Selection can only operate once reproduction and reliable translation exist. This raises the ordering question: does translation come first, or can selection build translation machinery itself?