Keltham reconvenes his lectures, more aware than before that he is trying to teach in days what Civilization takes years to engrain into the dath ilani; even if, yes, Civilization is teaching it to children rather than adults; yes, even so.
He may need to make more than one run on Probability in a lecture, if it's to be understood and used, as the other lectures Keltham taught were not quite meant to be used right away the same way. And then go on conveying it in his everyday words and actions, as adults show themselves before children.