Step 1: Examine the Main Objects in the Scene
Look at each major element in the image.
The desk appears normal.
The chair looks fine.
The lamp, books, and telephone don’t seem out of place.
Nothing seems to stand out as obviously incorrect.
Step 2: Check for Proportions and Perspective Errors
Sometimes, puzzles like this include size inconsistencies or odd perspectives. But in this case, all objects appear correctly proportioned and positioned.
Step 3: Focus on the Calendar
The desk calendar displays a date: SEPT 31.
At first, this might not seem unusual. But take a moment and think about it—Does September have 31 days?
Step 4: Verify the Date
September only has 30 days, not 31. That’s the error in the picture!