Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor assesses lab after strange book incident
S17E22
·
Shada Part 2
To
Doctor uncovers book's forbidden origins
S17E22
·
Shada Part 2
Why These Connect
The narrative assertion
"The Doctor introducing himself to Clare and requesting to examine the x-ray machine directly follows Clare's mention of the machine's damage, establishing his proactive approach to solving the scientific mystery."
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.