A spot of deja vu: on Friday night I glanced at Frank as he lay on his playmat. He was on his tummy. “But,” I thought. “I put him down on his back.” He has learnt to roll back to front. He likes being on his front, unlike his brother at the same age. Now the question is whether he will put flip and pilf together and start rolling around the room. He risks getting lego embedded in his tummy if he does, so he may be too prudent.