Lineal

Visualize a picture of an apple, one side green, other, red

Connect by lines—how else?

Look at a lecturer who gestures lineal connections in air, a teacher with chalk in hand

Arrange facts in an upward slant, parallel or converging

Arrange geographically, lines of diffusion, statistical facts reduced to a normal curve

All would be lost without diagrams

Trace history down to the present, up from the ape

Picture motivation as external through entering the organism—emerging transformed

Line is inescapable

We are incapable of questioning the reality of its presence