Cuanto más mayor me hago, más me doy cuenta de que la felicidad son mañanas tranquilas, un espacio limpio, noches tempranas, un hogar seguro y personas que no agotan mi energía.
As a mathematics teacher, I get asked this quite often! That extra space is actually a deliberate design feature for measurement accuracy. Over time, the corners of a ruler get worn down, chipped, or damaged from regular use or drops. If the "0" mark started exactly at the edge, any wear and tear would ruin your measurements. This "dead space" ensures your starting point remains perfectly accurate!