Redundancy:

https://meinnaturwissenschaftsblog.blogspot.com/2020/10/redundanz.html

Estimating the objective order or the possible extent of uncertainty reduction.

(In other words: To what degree can ignorance about what will happen be reduced?)

Error A:
Assuming a higher degree of uncertainty reduction than is actually possible or achievable.

Error B:
Assuming a lower degree of uncertainty reduction than is actually possible or achievable.

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We can either:

Error A: Be overconfident — and thus greatly overestimate what can be known.

or:

Error B: Be excessively humble — and thus greatly underestimate what can be known.