Chapter 6 of A Mentoring Course on Smalltalk
Motivation
At times, we will encounter complex problems that are structured such that a lot of detailed planning and careful work has to be done to tune what we think is the best solution, followed by experiments to determine if our guesses were correct or not. One such problem that comes up frequently is that of tuning a garbage collector.
[…]
p. 266:
> A Behavior is a vector field over a vector space.
[…]
[…]
~
See also
GIBSON, James J., 1986. The ecological approach to visual perception. Hillsdale, N.J.: Erlbaum. ISBN 978-0-89859-958-9.