Which of the following is NOT a factor in Heinrich's domino theory?

Heinrich's domino theory is a foundational concept in safety management, which posits that accidents result from a chain of events, likened to a line of falling dominos. The theory identifies several key factors, including unsafe acts, injuries resulting from those acts, social faults, and other contributing elements that can lead to accidents.

Unsafe acts are behaviors that increase the likelihood of an accident, while injuries are the direct consequences of those unsafe acts. Social faults refer to the societal and organizational factors that affect behavior and influence safety outcomes, highlighting the role of cultural and environmental context in workplace safety.

Weather conditions, however, do not fit into this framework as an intrinsic part of Heinrich's domino theory. While external factors like weather can impact safety, they are not considered a fundamental component of the accident causation process outlined in the theory. Instead, the theory focuses on internal factors, particularly human error and organizational influences, which directly lead to accidents. Thus, weather conditions are accurately identified as the factor that does not belong in Heinrich's model of accident causation.