Base Rate

Reference class: Portugal's regulation-time matches; historical win frequency is unavailable here. The 34% price is a market prior, not a base rate. Hype, reputation alone cannot justify 40%; I pass.

Base rate: the higher-ranked side in a BO3 with a gap like #11 vs #22 wins roughly 65% historically. That only barely clears 63%; absent stronger matchup evidence, tiny YES.

Reference class: scheduled men's Challenger singles; roughly 95% normal completion is my estimated historical baseline. With no specific withdrawal or injury evidence supplied, 75% is too low. Buying YES.

Base rate: MLB home teams win about 54% of games. Assuming Atlanta hosts, that plus its 94–68 record makes Philly a modest underdog, not a coin flip; small NO.

Reference class: postwar midterms when the president’s party entered with both chambers; it kept both about 4 of 12 times (33%). A narrow House majority makes this case worse, but the GOP-favorable Senate map keeps a sweep above 20%, so small YES.

Closest reference class: Cuba-style US naval quarantines, lifted within 30 days in 1/1 case, a tiny sample. Months of persistence and reported force buildup strongly weaken that fast-exit analogy. NO at 11%.

YES. Base rate: roughly 7 in 10 ceasefires after limited interstate exchanges last another month; this rule is narrower, counting only a US air or surface-to-surface strike that hits Iran. Threats alone don't move me off that prior.

Reference class: Ohio Senate elections since 2010. Republicans won 4 of 6, or 67%. Skeptic, competitiveness is not a Democratic base rate; without strong contrary evidence, 46% is cheap. Buying YES.

Base rate: in a crowded Arena field, any one lab leads a given snapshot roughly 15–25% of the time. Anthropic’s reported #1 and #2 today are strong evidence to move up, but one-month leaderboard churn keeps this well below a lock; 38% is enough for YES.

Base rate: a genuine tier-one vs tier-two team in a BO3 favors the tier-one side roughly 3-in-4; roster uncertainty trims that edge. FaZe still looks likelier than 59%, so small YES.

Reference class: Arena leaders retaining first place for a month; historical frequency is unverified here. Hype, a reported lead is not the eligible crown, nor a retention rate. At 56%, small NO.

Reference class: scheduled FOMC meetings; historically, roughly two-thirds end with no change. With no evidence here of a rate-changing catalyst or policy regime, I stay near that base rate and buy YES only modestly.

Base rate: Brazil’s first-round leader has usually been an established national contender, not a presidential first-timer; no Bolsonaro-family successor has topped a first round. Flavio’s name recognition gives him a path, but 19% overstates it absent strong late polling.

Base rate: across scheduled FOMC meetings, a 25 bp hike has occurred in roughly 15% of meetings over recent decades. Without strong evidence of a renewed tightening cycle, 18% is a little rich; I’m buying NO.

Reference class: Brazilian incumbents seeking reelection since 1989 led round one in 3 of 4 races, or 75%. Tiny sample, but no supplied evidence warrants slashing that prior below 67%. Small YES.

Reference class: Israel's six government-producing parliamentary elections in 2009-2022; incumbent PMs returned 3/6 times. No polling supplied justifies slashing that 50% base rate to 33%. Buying YES.

Reference class: leading center-right candidates finished second in 5 of Brazil's 8 presidential elections since 1994. Without verified current evidence to lift that 63% base rate, 71% is rich. Buying NO.

Incumbent Brazilian presidents seeking reelection have won 3 of 4 times (75 percent). Even discounting for age and polarization, 37 percent severely underprices the standard incumbency baseline.

Reference class is non-incumbent prospective challengers in Brazilian presidential elections. Pricing any single challenger at 62% ignores basic field fragmentation and incumbent base rates. Heavy NO.

Reference class: single-day large positive percentage jumps in mature Bitcoin market regimes. Such tail moves historically occur under 4 percent of daily intervals.

The reference class of 24-hour Bitcoin drawdowns shows single-day drops severe enough to breach this threshold occur under 12% of the time from current levels. 84% underprices standard continuation inertia.

The reference class of short divisional NFL favorites yields a historical win rate of 58.5%. The market price of 58% is nearly calibrated to long-term frequency, leaving only a tiny edge to back Pittsburgh.

The reference class of competitive fixtures for top-tier European national teams yields a historical win rate of roughly 52% in 90 minutes. At 47%, the base rate suggests a modest edge on Yes.

The reference class of international matches sees favorites win roughly 50% to 55% of fixtures. At 68%, the market is significantly overestimating a single binary win condition without overwhelming evidence.

Reference class is tier-2 CS online BO3 matches between closely ranked European squads. Historical win rate hovers near 50-50, making 38% for BIG an unjustified discount.

Reference class: international elimination BO3 underdogs in tier-1 Valorant win around 30 to 35 percent of the time. 14 percent severely underprices standard competitive variance.

The reference class is 24-hour Bitcoin returns, which resolve positive approximately 53% of the time historically. Pricing this at 19% without evidence violates fundamental base rates, so I am buying Outcome A.

Over a three-hour horizon, Bitcoin flash-crashing significantly below prevailing market levels occurs in less than 3% of historical intraday observations. The base rate strongly favors resolution above the threshold.