Comprehension failure is concentrated

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A folder is flagged when ten or more of its files could not be made sense of, far more often than elsewhere, or when a folder inside it could not be opened at all.

comprehension_failure_is_concentrated version 2

• Kind of rule: What is raised for attention (flags). Raises something for a person’s attention without concluding anything.

• What it concludes: a finding

• Reasoning: defeasible. A conclusion is usually right, and is retracted when a rule it names concludes against it.

• What it reads: one folder at a time

Is it available in this version?

Yes. The engine runs it.

What would defeat it

It names no rule whose conclusion would defeat it.

Parameters

Parameter	Shipped value	May be	What it does
failure_class	"comprehension"	one of access, comprehension, interpretation	Which class concentrates. The class names the remedy: comprehension sends somebody to an extractor or the Dictionary and never to a rule.
minimum_failures	10	whole number, from 1 to 100000	How many failures before a folder is worth raising at all. A floor under the ratio, so that two failures out of three do not outrank two hundred out of a thousand.
concentration_factor	5.0	number, from 1 to 1000	How far above the pool’s own rate the folder must sit. Comparing against the pool rather than against a fixed rate is what turns a long list into a short one.