"We realizedour coreunderlyingassumptionwas wrong.""They justwent back todoing it theold manualway.""The data weneeded wascompletelymissing orunusable.""Someonehardcodedsomething theyreally shouldn'thave.""It broke assoon as weput it intoproduction.""Legal / DataPrivacy(GDPR)blocked it.""The end-usersdidn't trustthe AI.""A simpleExcel rulewould havedone thejob.""The onlyperson whounderstoodthe code leftthe company.""We over-engineeredthesolution.""The businesschanged therequirementshalfwaythrough.""The AIconfidentlygave acompletelywrong answer.""Weunderestimatedhow long itwould actuallytake.""We spent80% of ourtime justcleaning thedata.""Unexpectedcloud orcomputecosts.""We had toscrap it andstartcompletelyover.""We madethe classicmistake ofdeploying ona Friday.""The pipelinefailed silentlyand no onenoticed.""Stakeholdersexpected100%accuracy.""The livedemospectacularlyfailed.""We didn'tinvolve theactual usersearlyenough.""We tried toboil the oceaninstead ofstartingsmall.""It workedperfectly onmy localmachine.""The proof-of-conceptworked, butit wouldn'tscale.""We realizedour coreunderlyingassumptionwas wrong.""They justwent back todoing it theold manualway.""The data weneeded wascompletelymissing orunusable.""Someonehardcodedsomething theyreally shouldn'thave.""It broke assoon as weput it intoproduction.""Legal / DataPrivacy(GDPR)blocked it.""The end-usersdidn't trustthe AI.""A simpleExcel rulewould havedone thejob.""The onlyperson whounderstoodthe code leftthe company.""We over-engineeredthesolution.""The businesschanged therequirementshalfwaythrough.""The AIconfidentlygave acompletelywrong answer.""Weunderestimatedhow long itwould actuallytake.""We spent80% of ourtime justcleaning thedata.""Unexpectedcloud orcomputecosts.""We had toscrap it andstartcompletelyover.""We madethe classicmistake ofdeploying ona Friday.""The pipelinefailed silentlyand no onenoticed.""Stakeholdersexpected100%accuracy.""The livedemospectacularlyfailed.""We didn'tinvolve theactual usersearlyenough.""We tried toboil the oceaninstead ofstartingsmall.""It workedperfectly onmy localmachine.""The proof-of-conceptworked, butit wouldn'tscale."

Oops Night - Call List

(Print) Use this randomly generated list as your call list when playing the game. There is no need to say the BINGO column name. Place some kind of mark (like an X, a checkmark, a dot, tally mark, etc) on each cell as you announce it, to keep track. You can also cut out each item, place them in a bag and pull words from the bag.


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  1. "We realized our core underlying assumption was wrong."
  2. "They just went back to doing it the old manual way."
  3. "The data we needed was completely missing or unusable."
  4. "Someone hardcoded something they really shouldn't have."
  5. "It broke as soon as we put it into production."
  6. "Legal / Data Privacy (GDPR) blocked it."
  7. "The end-users didn't trust the AI."
  8. "A simple Excel rule would have done the job."
  9. "The only person who understood the code left the company."
  10. "We over-engineered the solution."
  11. "The business changed the requirements halfway through."
  12. "The AI confidently gave a completely wrong answer."
  13. "We underestimated how long it would actually take."
  14. "We spent 80% of our time just cleaning the data."
  15. "Unexpected cloud or compute costs."
  16. "We had to scrap it and start completely over."
  17. "We made the classic mistake of deploying on a Friday."
  18. "The pipeline failed silently and no one noticed."
  19. "Stakeholders expected 100% accuracy."
  20. "The live demo spectacularly failed."
  21. "We didn't involve the actual users early enough."
  22. "We tried to boil the ocean instead of starting small."
  23. "It worked perfectly on my local machine."
  24. "The proof-of-concept worked, but it wouldn't scale."