- Cognitive psychology must explain not
only correct performance, but also the more predictable varieties
of human fallibility. Far from being rooted in irrational or maladaptive
tendencies, these recurrent error forms have their origins in fundamentally
useful psychological processes.
--Reason, 1990
- Knowledge and error flow from the same mental
sources, only success can tell the difference
--Ernst Mach, 1905 (quoted by Reason, 1990)