the.com/perforation
Engineering's polite suggestion that this object would prefer to be two objects.
means A line of small punched holes designed to make tearing or separating something clean and easy.
from From Latin perforare, to bore through — per (through) plus forare (to pierce), the same drilling instinct that gave us 'bore.'
Stamp eraPre-1850 stamps were cut apart with scissors.
Medical senseA perforated organ is a surgical emergency, not convenience.
Hidden mathHole-to-paper ratio determines whether tears stay straight.