Causal
strong strength
Narrative Connection
How these two moments in the story relate
From
Doctor reveals Mara’s deception to Nyssa
S20E6
·
Snakedance Part 2
To
Doctor discovers crystal’s purpose
S20E6
·
Snakedance Part 2
Why These Connect
The narrative assertion
"The Doctor’s explanation to Nyssa about the pictograms—depicting a ceremony commemorating the Mara’s supposed destruction—directly informs their interpretation of the later pictogram showing mental energy converging on the Great Crystal, clarifying the artifact’s purpose."
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.