I have just returned from a deep vacation. If you are reading this then may be you are not, in which case I hope you have enjoyed one already or have one planned. If you are not sure what I am talking about then read my earlier posts entitled ‘Mind wandering‘ on September 3rd, 2014 and ‘Love an engineer‘ on September 24th, 2014. Meanwhile enjoy the picture – its better than the fracture surfaces from last week [see my post entitled ‘Forensic engineering‘ on July 22nd, 2015]!