Spark & Anvil Privacy

Investor’s Confidence Ledger

Predict which way each money case goes, then say how sure you are.

Why “how sure” matters

A good money forecaster isn’t the one who’s always right; it’s the one whose confidence matches how often they’re actually right. A careful hedge beats an over-confident miss, so you can’t win by always shouting “Sure!”. Nothing here is wagered or spent — just predicted.

Saving & inflation · case 1 of 9

You put $100 into a savings account that earns compound interest, and you leave it completely untouched for many years — no deposits, no withdrawals.

Will the account balance go up, down, or stay the same?