Before bedtime, I placed my laptop and USB stick on the window-sill of LA’s spare bedroom.

The next day, all of us walked as a group to the bus stop en route to the campus of the University of Sheffield. Half way there, I realised that I had left both copies of my presentation slides back at the house.

Furious, LA instructed the rest of us to continue on our journey while he rushed back home to fetch my belongings.