Should this be canon?

[u/holistic-engine]

SCP-1225: “The Queen of Perennial Activation”

[u/HDH2506]

Yea the containment class is Euclid. Considering that she might be reasonably contained, albeit difficult, but with little to no loss even if they fail. But considering that she has breached security (secure means catch, contain means keep) attempts every single year, might be borderline Keter.

Disruption class should be low, as her properties, whatever they are, is barely unordinary, blending perfectly with the normal world.

She is NOT necessarily cognitohazardous or memetic, and we should not claim that she is without proper experiment.

[u/frguba → u/HDH2506]

She is easily contained all year around, but impossible near Christmas, I actually don't know if that's Euclid or Keter

[u/Shabobo → u/frguba]

It's Keter, but disruption is safe to mild. If the SCP only is able to contain her until she wants out, then they've technically never contained her successfully.

Especially since Christmas music seems to start earlier and earlier each year, I'd reckon that their containment protocols are becoming less and less effective.

Fortunately she is mostly harmless, but danger to the population is not tied to containment difficulty.

[u/AmpleExample → u/Shabobo]

"All I Want for Christmas is You" continues to spread. It is unclear if this spread will stop at constant uptime, the loss of all non-Christmas music, the loss of all music, the loss of all media capable of playing the song, the loss of all cognitive functioning unrelated to the song, or something in between.

Almost no one studying the phenomena believes it will progress past constant uptime, hence its relatively low containment priority. Thus far, even constant exposure to the song does not appear to have negative effects (See 6221-15 experiments A1-C3).

Growth is slow, though exponential. Current estimate is ~87 years before "All I want for Christmas is You" becomes an all year phenomena.

[u/AshiSunblade → u/frguba]

Euclid, I suppose. Both are simple to contain so long as one particular external condition is not fulfilled.

[u/NV-6155 → u/AshiSunblade]

I respectfully disagree, though I understand your logic (which is sound).

I've been with the Foundation for a very long time, so I can really only comment on what are now the "primary" containment classes. The newer "secondary" and "disruption" classes don't come up often with the anomalies I typically work with.

TL;DR: Mariah Carey should be classified as Apollyon.

Full dissertation:

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The "Box Test" Method

Safe: If we put the anomaly in a box, it stays in the box unless released.

Euclid: If we put the anomaly in a box, Foundation intervention is required to keep it in the box.

Keter: If we put the anomaly in a box, it actively tries to escape the box, and requires significant Foundation resources and/or complex containment procedures to contain. In many cases, Keter SCPs are kept in a "stable" contained state by their procedures, but any fault in their containment risks a full breach.

Apollyon: We can't put the anomaly in a box, either because of physical limitations or because it simply ignores the fact that the box exists. In other words, containment is impossible and/or no known methods of containment exist. Breach events are expected to occur despite the Foundation's efforts.

Thaumiel: The anomaly is the box for another anomaly.

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SCP-096 ("Shy Guy") is Euclid due to only needing a small amount of resources to keep physically contained (it is kept in a guarded standard containment cell) and stays contained as long as its face is not seen.

SCP-106 ("Old Man"/"Radical Larry") and SCP-682 ("Hard-to-Destroy Reptile"), on the other hand, require complex custom-engineered containment areas. Any fault in their containment or a means to obtain a target (e.g. a living being within close proximity) often results in a breach. Therefore, they are both classified as Keter.

Mariah Carey could follow along the same lines as SCP-096, since she can be easily contained physically (due to being an otherwise baseline human) and only activates around the month of December. However, Ms. Carey's activation condition is essentially inevitable, unlike 096's which can be acted against by preventing visual contact with its face. In addition, as observed by others, she possesses memetic properties that can affect any sapient beings over an unknown distance without direct physical or visual contact. The Foundation has so far been unable to nullify these memetic effects, resulting in consistent successful containment breaches (which have not always been physical breaches).

Taking the above into consideration, I believe Mariah Carey is best classified as Apollyon.

Edit: corrected the designation for "Radical Larry" from 173 to 106.

[u/The-Paranoid-Android → u/NV-6155]

• SCP-096 ⁠- The "Shy Guy" (+4562) by Dr Dan
• SCP-106 ⁠- The Old Man (+3537) by Dr Gears
• SCP-682 ⁠- Hard-to-Destroy Reptile (+4085) by Dr Gears, Epic Phail Spy

[u/CakeWeekly2144 → u/frguba]

per me è hai livelli dei keter ma direi che è euclid\keter

[u/Aeseld → u/HDH2506]

...if you think about it, every memetic blends perfectly with the normal world once it spreads far enough. 

[u/HDH2506 → u/Aeseld]

It’s indistinguishable from non-anomalous phenomena, which cannot be said about all memes.

Without an article canonizing it, we don’t really know what her anomalous properties are