Engineers Say the Darndest Things

From: “Kodak: A Thousand Nerds – TechTalk”

Compressed-graphite field plotter:
This example of inscriptive technology is a dactylically manipulated lignin/cellulose-encased crystalline carbon allotrope allowing shear force deposition for semiotic and representational modification of planar compressed-cellulose substrates.

I dare you to think of what the device might be before checking the answer out.