If you’ve listened to anything he’s said in the last few years he doesn’t hold very tightly to the microtublule explanation. Paraphrasing what he said in a vid

If you’ve listened to anything he’s said in the last few years he doesn’t hold very tightly to the microtublule explanation. Paraphrasing what he said in a video from a year ago or so: it’s an interesting theory that he’d like to see tested, but he has no idea whether it’s correct or not.