Billy has closed further comments on his "Placeholder for GW/CC 'How I got here’” climate doom thread, and just when I thought that he might finally be interested in actual discussion. So, I’m starting this thread to answer some of the responses that he gave in his last post — and thanks, Billy, for those responses, instead of your typical non-responsiveness.   Billy replied to me:   My understanding is that Tyndall's testing of his hypotheses were well-defined and car