'461 meters per second across the core of the earth'
booklet, text, image.

method:
walk east, with the turning of the earth . . . . . . . . . . . . . . . . . . . (460m/s)
constant pace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (1m/s)
and note down all language
crossing street = new line, a crossing over

Public Line as the line of text
this unfolding,
the material poem of the world.