  The lesson of this story is this: Bub’s action of maintaining his confidence in his belief as a result of his new knowledge is reasonable even though his retained belief itself is unreasonable. Bub’s assessment of the original evidence concerning \(J\) was irrational, but his reaction to the new information was rational; his subsequent belief in \(J\) was (still) irrational (because although the video gives a little support to \(J\), it’s not much). The question, ‘Is Bub being rational after he got his new knowledge?’ has two reasonable interpretations: ‘Is his retained belief in \(J\) rational after his acquisition of the new knowledge?’ vs. ‘Is his response to the new knowledge rational?’