I was sitting in Kitanomura park at lunchtime, eating my carrot and daikon salad, whilst watching the children play.
I wondered what the view from my bench might look like at other times of year, so I tapped the screen of my iPhone once, and a few seconds later was presented with a whole collection of photos taken within metres of where I sat, including one of the very bench I was sitting on. Someone else was sitting on it.
It felt a bit funny.
The wonders of modern technology.