Probability Probabilistic assertions summarize effects of laziness:failure to enumerate exceptions,qualifications,etc. 一 ignorance:lack of relevant facts,initial conditions,etc. Subjective probability: Probabilities relate propositions to agent's own state of knowledge e.g.,P(A25 I no reported accidents)=0.06 These are not assertions about the world Probability Probabilistic assertions summarize effects of – laziness: failure to enumerate exceptions, qualifications, etc. – – ignorance: lack of relevant facts, initial conditions, etc. – Subjective probability: • Probabilities relate propositions to agent's own state of knowledge e.g., P(A25 | no reported accidents) = 0.06 These are not assertions about the world Probabilities of propositions change with new evidence: