I am interested in ecosystems and environments because they affect how we live and feel. A city and its neighborhoods are ecosystems. Their design influences the health, behavior, and perception of the community.

A lower-class neighborhood, for example, has zoning for businesses that would never be acceptable in an upper-class one. The air there is different, and the resources, like schools, are too.

Every little part of what surrounds us, even inside our homes, affects us. The design of a space can make a person feel sad or anxious, and the same goes for cities and the culture of countries.

One of the first things I noticed when I immigrated to the US was the lack of plazas or public spaces to socialize without consuming. In Mexico City, I could always go to Coyoacan and find someone I knew. Wearing all black was enough to sit together and talk even if we didn't know each other. I made many friends that way because people from underground subcultures knew to go there.

What I had available in the US were streets with businesses and a society worried about talking to strangers. Meeting people wasn't easy, so I quickly understood why people accumulate so much and feel alone.

In 'Undientifiable source of pain,' an older man spends the day outside. He walks along a street, having small interactions with people and dogs that we can't see, but eventually goes home alone.