Dreams.

I recently had a dream that I was laying tracks at a tram junction in Traktorny. I was optimizing things. And I didn't have to do anything with the wires. Then I was telling some guys about it in the dream, and suddenly I felt uneasy: what if I messed something up there, and a tram derails, and someone gets hurt. I started trying to remember if anyone was looking out the windows of the houses while I was working there.