No idea if the people back then, when both highway=path and sac_scale=* where created ever dreamt of mapping a path there, but this is where openstreetmapping stands now. Here to where SAC got mentioned for the first time, as far as I can tell, https://www.mail-archive.com/talk-de@openstreetmap.org/msg07107.html The problem that was meant to solve certainly does not substantiate that.
But there were some T6 mappings right from the start, osm tag history
