Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor resists the Key’s dark lure
S16E26
·
The Armageddon Factor Part 6
To
Doctor scrambles the TARDIS future to evade pursuit
S16E26
·
The Armageddon Factor Part 6
Why These Connect
The narrative assertion
"The Doctor's refusal to surrender the Key to the Black Guardian leads directly to his installation of a randomiser to evade pursuit, shaping the TARDIS's future navigation."
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.