Card Stacking is the technique is used in the passage to promote
propaganda.
What is the purpose of Squealer's use of propaganda?
Squealer purposely ignores/represses the other dimension out of concern that it would work against him in order to further his primary goal of influencing the animal's actions in his favour.
Squealer uses the "ard stacking technique" to trick the animals into believing that "output is booming."
Thus, it is Card stacking.
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