As these BTCUs become more tolerated, Phase 2 is
entered and now the distinction between safe and unsafe
practice becomes blurred and deviations from normal practice
become more acceptable. Although these may not
lead to many episodes of severe harm, they make it easier
for some individuals to enter the third phase. This can be
thought of as the space in which extreme disregard for
safety occurs. Now dangerous actions, albeit on the part of
a minority, can take place. The three-phase model describes
a creep from safe practice to less acceptable practice, where
deviations from accepted standards are commonplace and
from which position it is easier for some individuals in that
system to commit more major deviations.