A "whiteboard guy" meme, featuring two frames with a young-ish guy looking at the camera and gesturing at a small whiteboard or smiling. In the first, the whiteboard says "When people travel to the past, they worry about radically changing the present by doing something small"; in the second, "Few people think that they can radically change the future by doing something small in the present."
https://tldr.nettime.org/system_nettime/media_attachments/files/109/864/676/464/755/211/original/9e0a2ded2c71517a.jpeg