I only read the BC paper (Moss et al, [3]), because I knew one of the authors (and he's a smart guy). Anyway, they show that you can find triangles just as eas

I only read the BC paper (Moss et al, [3]), because I knew one of the authors (and he's a smart guy). Anyway, they show that you can find triangles just as easily, and that you can find similar circles in computer-generated random data with the same properties as the background. At the same time, Penrose likes to be controversial. So I guess I'm saying that I'm willing to take your money...