Cute idea and as long enough as it needs to be.
There are two things which I don't think worked well and stopped me from upvoting, though. I don't like the use of the cognitive resistance value here - it doesn't fit with what I think the CRV should be, which is basically worldbuilding fluff. At most, it only exists to be a sciency-sounding scale for "people who go crazy towards cognitohazards vs people who aren't affected" as applied to a document about the supernatural. A specific value (not less than, greater than, or a range) implies that it has some kind of inherent meaning, which gels badly with something which is much older than the Foundation and modern civilisation. I don't think an additional nod to the number 56 (the reference of which I didn't get, though that's not necessarily a fault of the SCP) is worth introducing this confusion.
I'm also wary of the phrase "as a subject's behavior in public becomes more congruent to their behavior in private, the instance of SCP-5610 becomes increasingly detailed". Readers might be able to imagine what this means, but it's pretty vague. I appreciate the aim not to introduce additional details in an article like this, but the question of "how would the Foundation even have measured this" comes up, and I think that could have used another line or two of fleshing out.
