‘Ash, did I tell you that in China, or it might have been Japan, scientists are building robots that are able to build other robots, so, you don’t need a human. I thought, what if they build killer robots that hunt down humans and kill them. I realised that was silly as their batteries would need recharging on a regular basis so they’d soon run out and fall over…..’

‘I didn’t hear that. Look I’ve got the kids to pick up from school. Oh, now I did notice they’ve put 20 new charging points in at Tescos car park. That might solve your recharging problem’