Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Unstable crystal vanishes in UNIT lab
S11E22
·
Planet of the Spiders Part 2
To
Sarah reacts to vanished crystal
S11E22
·
Planet of the Spiders Part 2
Why These Connect
The narrative assertion
"The sudden disappearance of the crystal (beat_88c2c59a82c8936d) prompts Sarah's urgent alert to the Doctor (beat_ffba024d76a7f796), escalating the crisis and confirming the crystal's sentient or reactive nature."
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.