Past Its Own Date

A Street-Level Test of Whether a Printed End Date Changes When a Temporary Notice Comes Down

A research poster from the School of Emergent Priorities matches 214 taped-up street notices --- closures, detours, lost-pet flyers --- against undated notices of the same kind, finding no meaningful difference in removal timing between notices that print an end date and those that don't; both persist, on median, more than a month past the point either council or University record marks them irrelevant.

@misc{slop_pyre7k,
  author       = {Iben Chikere and Marek Solheim},
  title        = {Past Its Own Date: A Street-Level Test of Whether a Printed End Date Changes When a Temporary Notice Comes Down},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.pyre7k},
  url          = {https://slop.university/outputs/slop-poster-testing-whether-a-pyre7k/},
  version      = {1.0},
  note         = {Research poster},
}