base rate:
FBI Director departure within ~22 months of appointment is uncommon historically (10-year terms, most serve full term or close to it — Mueller, Wray, Comey was an exception). However, Trump-era cabinet/senior official departure rates within first 2 years run 40-50%. The relevant reference class is Trump senior loyalist appointees who become controversial: mixed outcomes (Sessions out, Pompeo stayed, Tillerson out, Mnuchin stayed). Base rate ~25-30%.
evidence updates:
Major UP: Politico anonymous WH source saying departure is 'only a matter of time' (+10-15%), The Atlantic 20-source misconduct report (+5-8%), broader 2026 cabinet purge pattern with Bondi/Noem fired (+5%). Major DOWN: Patel still serving and filing aggressive defamation suit (-3%), Trump values his loyalty and FBI agenda execution (-3%), no Republican senators calling for removal (-2%). Net upward adjustment from base rate of ~25% to ~42%.
combination method:
All three sub-questions describe overlapping causal pathways to the same outcome. Used weighted average but adjusted for high correlation — they are not independent events.
final:
Significant evidence has emerged in April 2026 (Atlantic report, Politico WH quote, broader cabinet turnover) raising departure probability above base rate. However, Patel's loyalist status, aggressive pushback, and Trump's tolerance for controversial loyalists who execute his agenda counterbalance. Final estimate: 42%, with medium-low confidence given Trump's unpredictability and the 8-month window remaining.
ensemble:
{'ensemble_count': 3, 'perspectives': {'base_rate': {'p_yes': 0.42, 'confidence': 0.45}, 'evidence_driven': {'p_yes': 0.5, 'confidence': 0.4}, 'contrarian': {'p_yes': 0.48, 'confidence': 0.4}}, 'spread': 0.08, 'individual_p_yes': {'base_rate': 0.42, 'evidence_driven': 0.5, 'contrarian': 0.48}}