Even if the first six factors are present, performance might not occur if
the environmental conditions are so unsuitable as to present insurmountable
barriers to performance. Most of us can successfully drive
our cars on windy days but none of us can drive through a tornado. In
less dramatic terms, missing tools and equipment, competing priorities,
a repressive climate and other factors can interfere with our ability to
perform as expected, regardless of our motives or our repertoire, the
presence or absence of feedback and the quality of the mental models
that guide our thinking and actions. In short, the task environment
must support the desired performance; at the very least, it must be
manageable.