Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor identifies the poisoner
S1E36
·
A Desperate Venture
To
Ian Uncovers the Poisoner’s Identity
S1E36
·
A Desperate Venture
Why These Connect
The narrative assertion
"Ian's encounter (beat_af7455462efc3d99) and struggle with the figure in the tunnels leads to him identifying the figure as a man from the crashed spaceship (beat_c33b8d8440d4b0af), and the Doctor deducing the survivors are poisoning the water."
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.