… someone adds a thousand not-quite rectangular buildings.
… the building_tools plugin goes away.
… someone uses highway=road.
… iD switches to right-click-and-drag to pan the map.
… someone glues all your roads to nearby landuses.
… someone uses Highway=Road.
… some HOT mappers visit your area.
… the offset of your favorite imagery is adjusted in a random direction.
… you have to post on the tagging mailing list.
… TIGER gets imported worldwide.
… someone changes a TIGER imported road, but makes it worse.
… someone adds a 5,000 member landuse polygon in your area.
… someone maps all the sidewalks in your town with sidewalk tag on highways and separate highway=footway ways.
… you'll get 100 conflicts on your next upload.
… someone draws a road through a house.
… you switch to Maxar imagery.
… someone changes a building name to the romanised form.
… someone forgets to tag a way as a building.
… someone uploads a closed way with just area=yes.
… someone tags barrier on a landuse.
… someone comes up with a new public transport tagging scheme.
… your HOTOSM task is invalidated.
… someone performs a mechanical edit on everything with a name tag.
… someone creates a changeset spanning half the globe.
… another year is added to when the area datatype will be available.
… APIv0.7 gets delayed again.
… someone moves a whole city to Antarctica.
… another proposal for a new type of basketball hoop is created.
… someone breaks the coastline for Eurasia.
… an underpaid Amazon worker imports the whole of Google Maps into OSM.
… someone tries to add a multipolygon relation for the Eurasian landmass.
… an underpaid Amazon worker starts mapping driveways in your area.
… someone labels the world as "COVID-19".
… someone deletes the whole UK administrative boundary when trying to add their business.
… JOSM stops responding.
… someone explains the difference between path and footway.
… JOSM causes a Blue Screen of Death.
… someone updates opening_hours rather than opening_hours:covid19.
… someone adds Google Maps in the source tag.
… JOSM and iD stop working, and the Potlatch editors feel smug.
… you have to map more greenhouses in Demre.
… you have to map 500 pathways in Ghana.
… every way you touch will be part of a massive landuse multipolygon relation that won't load in JOSM.
… JOSM takes over your soul ever so more.
… JOSM starts flipping your left and right mouse button.
… JOSM's snow for christmas is displayed all the time, not just at start-up.
… two JOSM keyboard shortcuts are randomly switched.
… a JOSM plugin suddenly stops working.
… the OSM license needs to change again.
… OpenStreetMap becomes CC-BY-SA-ND.
… someone suggests changing to CC-0.
… someone deletes a way along with all of its history only to draw a new one in the same place with slightly different tags.
… iD starts adding nonstraight=yes to ways that shouldn't be straightened.
… someone tags for the renderer.
… someone converts the country of Canada to a bus stop.
… someone adds public_transport:version=3 to a bus route relation.
… someone maps multiple tennis courts as one.
… you cannot delete any OSM elements for one month.
… someone incorrectly uses service=driveway.
… someone tags a rollercoaster as a railway.
… someone imports outdated landuse.
… someone maps a school as a node, but the recreation ground as an area.
… someone converts a turn restriction to a multipolygon.
… iD gets stuck in one position.
… one of your changesets is downvoted in OSMCha.
… someone forgets to add turn restrictions.
… a node is moved halfway around the world.
… someone adds redundant nodes to a straight way.
… the coordinates stored in OSM lose one bit of precision.
… a bay is wiped off the map.
… somebody uses the role key.
… somebody uses type=* on a non-relation.
… somebody assigns the tag unicorn:parking_lot to a garage.
… all of your OpenStreetMap contributions in the past week are deleted irrecoverably.
… 1000 notes are added in your area.
… someone places 4 notes at the exact same position.