Ethics

During this episode it is revealed that Klingons have visible ridges on their spines and feet as well as their foreheads.

The heavy barrel that falls on Worf in the cargo bay was being stored high up and was not strapped down/secured in any way. On a starship that is often subjected to sudden, violent jars and jolts (so much so that bridge crewmen are often thrown from their seats), heavy, dangerous cargo would not be stacked/stored without being properly secured in some way.

Referenced in Star Trek: The Next Generation: Parallels (1993)