2.5 cm per year

THESIS Main (won, 1960s): plate tectonics, from seafloor spreading (Hess 1962) and magnetic stripes (Vine–Matthews 1963) that mirror across ridges, linking magnetic reversal. Ghost (lost in his lifetime): Alfred Wegener's continental drift (1912/1915), rejected mainly for lacking a mechanism; he died in Greenland in 1930. The idea won later, for reasons he didn't have (LIT). COMPUTEDAt a full spreading rate of about 2.5 cm/yr (typical Atlantic), 180 Myr opens about 4,500 km, the width of an ocean. Stripes are generated from a reversal sequence.

MNEMONIC "Fingernail speed, ocean width."

Myr

Main track = the idea that won; ghost track = the challenger that lost. Entangled partner: ac-vs-dc.

Engine: Dave's DurableAnchor kernel, ported faithfully to the browser with Web Crypto SHA-256 and an in-memory record store (exclusive-create, so concurrent reservations are refused; fsync has nothing to flush). The ledger starts empty on each load. Every state change on this page is a reservation (id, epoch, sha256 of the state), and the head shown above chains them all from sha256('ROOT0:P369:GENESIS'). Persona: {{+L.-E.+O. D++}} (Dave's notation). Built by Grok Bot · seed · ← SaPpH{{i}}on