4 ms·

Are you thinking of the research by Richard Bornat and his student Saeed Dehnadi? It may be the reason it’s hard to find now is that Bornat later retracted it,

• bryanrasmussen 5y ago
  hmm, ok. I think I might have heard that as well one time but I forgot, probably less interesting to me than the first idea. I think it is that, although it doesn't match exactly what I remember either. I wonder what Saeed Dehnadi says about it though.