The Mimic

Indistinguishable from a known person, or nearly so. Where a discrepancy is reported it is small and facial. Dreamers frequently cannot say afterwards what was wrong.

Behaves as the person would, slightly off. Speaks. Does not threaten. The reports rarely contain an event: the content is the knowledge.

Ordinary dream settings, most often domestic and most often with the real person plausibly present. Not primarily a paralysis figure, which distinguishes it from most of this archive.

1. An ordinary dream with a familiar person in it.
2. Certainty that it is not them, arriving without cause.
3. Concealment of that knowledge by the dreamer.
4. No confrontation, and usually no resolution.

Dread with a social edge. Reports describe isolation, because the dreamer cannot say what they know, more than they describe fear of the figure.

Changeling and impostor beliefs are genuinely old and widespread, and the delusional misidentification syndromes described in clinical literature are a separate and real phenomenon. Neither is the source of the modern dream reports, which are recent in their current form.

Reports are numerous and are overwhelmingly from English-language internet communities of the last fifteen years, which is exactly the distribution a culturally transmitted description produces. The archive treats that as evidence against independence rather than for prevalence.

Whether the figure is hostile varies and most reports say it is not, which is unusual and is worth getting down. A minority report the same experience about a place rather than a person, which is closer to the wrong-house material and is not covered here.

• Certainty without evidence, which is ordinary dream construction.
• A known person, wrongly.
• Concealment, by the dreamer.
• A recent and traceable name.

The reassurance is substantial and well founded. This experience is common, it follows directly from how dream characters are built, and having it says nothing about you or about the person in it.

The composite person entry explains the mechanism at more length and is worth reading alongside.

The waking residue can be unpleasant and dreamers occasionally report a lingering wariness towards a real person, which is entirely unearned and worth naming so it can be dismissed.

Dreams assert identity as an attribute rather than deriving it from appearance, which the composite person entry sets out. That mechanism produces two people in one body, a face that does not match a name, and identity changing mid-scene without objection.

The mimic is the same mechanism with the sign flipped: the appearance is right and the identity is asserted to be wrong.

Nothing further is needed to account for it, which is the substance of the assessment above.

Changeling beliefs are old, geographically widespread and were used to explain real illness and disability in ways that caused enormous harm, which is worth stating rather than treating as picturesque folklore.

The modern online version is a distinct phenomenon with a traceable and recent spread, and the archive keeps the two apart.

Reasonably supported: dreams assert identity independently of appearance, which predicts this experience directly.

Documented separately: clinical misidentification syndromes, which are a real and different thing and are not what these reports describe.

Not established, and argued against here: any independence of the description from its online transmission.

• How did you know it was not them?
• Was there anything actually wrong?
• Did you say anything?
• Where did you first hear of this idea?

Log with the composite person and face reports. The identity machinery is the pattern and it is far more interesting than the entity.