Every week, one category. Find the highest idiot index with evidence to back it up. All entries pass human review; the best approved find wins a week on the homepage.
No challenge is open right now — the next one starts Monday (UTC). Check the archive below to see how past weeks played out.
The archive fills in as weekly challenges complete.
Entries are community estimates reviewed for plausibility, not verified teardowns — see Methodology. Winner features run seven days from judging.