Featuring Dr James Grime. More links & stuff in full description below ↓↓↓ Extra footage from this interview: Blog post about the .\rbr\rbrExtra footage from our Squared Squares video: More links & stuff in full description below ↓↓↓ Check out .\rbr\rbrMatt Parker reveals his pride and joy - the mysterious Parker Square! More links & stuff in full description below ↓↓↓ T-Shirt: .\rbr\rbrMatt Parker shows off his Magic Square party trick (unlike magicians, mathematicians often reveal their secrets). More links & stuff in full description below .