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"
"Their cumulative effect is certainly considerable, and yet each
of them is quite possible in itself.

Word:

cumulative

Question:

What does the term "cumulative effect" refer to in this context?

Answer (optional):

In this context, the term "cumulative effect" refers to the overall impact or impression made by a series of unusual facts or circumstances about a supposed burglary event, when considered all together, even though each individual fact or circumstance might be considered possible on its own.