Round 1 / 5
Today's ChallengeHow It Works
1
Commit to a guess
You see an everyday item and a past decade. You have to lock in a price before seeing the real number.
2
Feel the sting
We reveal the actual sourced price and your percent error. That gap is what recalibrates your memory.
3
Find your blind spot
After 5 rounds, see a map of your error by category and decade. Know exactly where your intuition breaks.
80+ Sourced historical items in rotation embedded static JSON, citations from BLS, EIA, Census Bureau, Economist Big Mac Index, NADA
~16 Rotation cycle length calculation: 80+ items ÷ 5 rounds per day ≈ 16 unique daily sets before repeat