No, I can't say that I have. I was becoming quite excited, but Poirot damped my ardour by remarking: "Yet the explanation is quite simple. 
Poirot convinced me that the explanation isn't plausible.
mnli hypothesis: Poirot convinced me that the explanation isn't plausible. premise: No, I can't say that I have. I was becoming quite excited, but Poirot damped my ardour by remarking: "Yet the explanation is quite simple. 