Causal strong strength

Narrative Connection

How these two moments in the story relate

Why These Connect

The narrative assertion

"The discovery of the slime trail (evidence of an alien organism) drives the Doctor's deduction that the station is more than mechanical — it's biogenic. This realization directly leads them to search for Sarah, believing she was taken by an organism, not just machinery."

About Causal Connections

A directly causes B. The first event sets forces in motion that produce the second. These are the load-bearing connections of plot--remove one and the story structure collapses.