classical_reasoning: small change of wording
classical_reasoning: small change of wording

leanprover/logic_and_proof,avigad/logic_and_proof,avigad/logic_and_proof,avigad/logic_and_proof,rlewis1988/logic_and_proof,leanprover/logic_and_proof,rlewis1988/logic_and_proof,leanprover/logic_and_proof,rlewis1988/logic_and_proof