and that's you know an important part of language is understanding its structure and what are the valid sentences or not but you know should the probability of the sentence the cat sets on the mat be zero well no because sometimes people fudge their keyboard or miss type it should be much lower but it shouldn't be all the way to zero for instance and then you can kind of get to more interesting sentences that you could query you could say you know what's the probability in the sentence the hyena stephannie met and compare that to the