iTubePeople Research Paper #2: people who sat near me on the Tube.
For scientific reasons, I'll try to categorize the various species.
A Sleeper and a Reader.
Three Readers. Although they could also be Studiers. More research needed on these three.
Could be a Worrier or a Psycho. Glad I'm not sitting next to him.
Three Teenagers. Often seen in packs of three or more, as shown here. Their camouflage (called school uniforms) serves as a warning to other iTubePeople. Fortunately, this pack was harmless.