In the last few days my older son, D became a teenager. Do you know how old that makes me feel? When we were at Rene D counted a section of the wine bottles that make up the ceiling and did some maths, muttering numbers to himself. He worked out the ceiling should be filled with 2688, but there are gaps. The odd missing bottle, and bits of woodwork preventing bottles being put in certain places. So D decided it was nearer 2600 bottles. Still my nerd.