You shouldn't trust a human person who makes that claim. But if we are using 'person' in a way that includes the steel-Vulcan from the quote then yes, you should.
There inherent uncertainity in the input. The steel-Vulcan in question counted one specifc case as being 24% relevant to the current question. That's two digits of accuracy.
If many of your input variables only have two digits of accuracy the end result shouldn't have four digits of accuracy.
If many of your input variables only have two digits of accuracy the end result shouldn't have four digits of accuracy.
Almost-inaudibly, whispering in a small corner of the room while scribbling in a notebook that the teacher is totally stupid while said teacher says something similar to the quote above:
under the assumption that all variables have equivalent ratios of weight to the final result and that the probability distribution of the randomness is evenly distributed across sub-digits of inaccuracy, along with a few other invisible assumptions about...
Here's another installment of rationality quotes. The usual rules apply: