It already is in Bayesian language, really, but to make it more explicit you could rephrase it as “Unless P(B|A) is 1, there’s always some possibility that hypothesis A is true but you don’t get to see observation B.”
It already is in Bayesian language, really, but to make it more explicit you could rephrase it as “Unless P(B|A) is 1, there’s always some possibility that hypothesis A is true but you don’t get to see observation B.”