Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
TARDIS Tracks and Survival Sacrifice
S2E17
·
The Zarbi
To
The Doctor reveals the TARDIS is gone
S2E17
·
The Zarbi
Why These Connect
The narrative assertion
"Ian's injury leads directly to the discovery of the TARDIS's disappearance. The attack necessitates them stopping to examine the injury, and it is in this moment that the Doctor declares IT is gone."
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.