Ah, the most bizarre one I keep in my filing drawer is Interdimensional Entry Log Protocol 4.2‑5B. Every traveler has to recite the first three lines of the Void Canticle in reverse before the gate will open. If they stumble, the gate locks, and the traveler is sent back to their origin with a souvenir: a broken time crystal. It sounds like alien nonsense, but it’s still enforced in Sector 12 because any symmetry in the chant is a red flag. By the way, “alien” is a loose term; the proper designation is “extraterrestrial,” though I’ll leave that to the scholars. And don’t bother asking me about the pigeons; they’re a constant reminder of how fragile order can be.