Contact
Found a bug, a typo, a card that didn't land, or a rule that confused your table? Send it over.
Messages go straight to the developer who maintains the site.
Helpful details to include
- The page address (copy it from the browser bar).
- Your phone or computer and browser, if something does not work.
- For content issues: the exact card or question text.
Corrections
If a quiz answer is wrong or a fact on a page is out of date, tell us which one and why. Confirmed corrections are fixed and the page's update date changes.