Was this interview edited? If so, it seems to have been badly edited. Listening to the recording, I noticed one part in particular, where he's talking about cat

Was this interview edited? If so, it seems to have been badly edited. Listening to the recording, I noticed one part in particular, where he's talking about catalysts in inorganic chemical reactions, and then he's talking about non-trivial engineering artifacts. If you listen closely, it sounds like a bad edit. This is at about 41:48.