Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Peri recognizes Earth in ruined London
S23E1
·
The Mysterious Planet Part 1
To
Doctor leaves Peri to explore mystery
S23E1
·
The Mysterious Planet Part 1
Why These Connect
The narrative assertion
"Peri's distress at the revelation that Ravalox is Earth motivates the Doctor to leave her alone in order to continue his investigation, showing his conflict between scientific curiosity and care for his companion."
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.