the.com/shape
the silent agreement that lets your brain tell a cat from a chair
means The form or outline of something — the configuration of its surface that lets you recognize it at a glance.
from From Old English 'sceap' or 'gesceap,' meaning creation, form, or condition — itself tied to the verb 'scieppan,' to create or shape. It belongs to a Germanic family (a cousin of words behind German 'schaffen,' to create). The same root quietly survives in the suffix '-ship' — friendship, hardship — where it once meant the 'shape' or state of a thing.
oldest mathGeometry predates writing in some cultures
bee geniusHexagons use least wax for most honey
no straight linesNature almost never makes a true straight edge
shape memorySome metals snap back to original form when heated
infinite sidesA circle is just a polygon with endless edges