In seriousness this one commandment is the hardest to intrepret:
"Don’t forget to communicate when rappelling multi-pitch routes with people coming up. Hanging out in space on the rap line while pizza-sized dinner plates go flying by just sucks. Talk with the other climbers, make it all work in a friendly way, it can be done safely but takes open coms, a willingness to work together and perhaps a little more time to do it safely.”
Technically, who has right of way here? A good local example is Hitchcock Gully (Upper & Lower), lots of folks plan to rap it, it’s a common descent route, but if parties are coming up it kinda sucks... I’ve heard of people descending Shoestring as it is much faster than the walk off... but if there are 3 parties behind you?