A “situation awareness deficit” refers to a lack of or impairment in an individual’s ability to perceive, understand, and project their surroundings and situation, leading to potential errors or accidents. Recognizing and addressing SA deficits is crucial for safety and performance, which includes training.
A person needs to be alert to understand what is happening near to them. A lack of alertness can be due simply to ignorance.

Tunnel to Where?
Wormhole
More insightful details to be added here.
