I followed someone last week. It wasn’t supposed to be exciting. He took the same route I usually take from the pedestrian bridge to the main square in Plovdiv. I just had to maintain a forced pace, and shy away from shops so I could keep up. It started when I saw him give change to a man with a dirty, empty candy box on the bridge, followed by a reaching-for-his-wallet for both the women that sell hand-picked garden flowers. I was curious to see if he would also show generosity to the beggars at the other end of the bridge. We ended up in the park a couple of kilometers from the bridge.  I continued and he sat down.