Dimensionless Invariants for Intentional Systems: Measuring the Fit of Vehicular Activities to Environmental Layout
Robert E. Shaw, Oded M. Flascher, Endre Erik Kadar · 2018
“When in use, a tool is a sort of extension of the hand, almost an attachment to it or a part of the user’s own body, and thus is no longer a part of the environment of the user. But when not in use, the tool is simply a detached object of the environment. . .the boundary between the animal and the environment is not fixed at the surface of the skin but can shift.”