the.com/multiply
addition that got tired of repeating itself.
means an operation that scales one number by another, turning repeated addition into a single fast move.
from from latin multiplicare, 'to have many folds' — multi (many) plus plicare (to fold), so literally 'many-folding' a number over itself.
symbol historythe x sign appeared in 1631, borrowed from st andrew's cross
zero ruleanything times zero collapses the whole universe to nothing
speed tricklog tables turned multiplying into mere addition for centuries
rabbits problemfibonacci invented his sequence modeling multiplying rabbit pairs
for instance
compound interest — money multiplies itself yearly, turning $100 into $1000s over decades
bacterial growth — e. coli doubles every 20 minutes under ideal lab conditions
chessboard wheat legend — doubling grains per square hits 18 quintillion by square 64
viral spread models — r-naught numbers multiply infections exponentially in epidemiology