The Taxonomy of the Interval: Differential Vulnerability to the Sufficient Mirror in the General Population, Epilepsy, Autism, and ADHD

This theoretical-conceptual preprint asks whether the high-fluency environments addressed by Sufficient Mirror Theory (SMT) impose different regulatory costs on people whose self-regulatory systems operate within different margins. It develops the Taxonomy of the Interval as a biphasic reading of three neurobiological domains — cortical excitability, predictive load, and attentional regulation — using the dose-response form developed in Thermodynamics of Sovereignty. Below one threshold regulation is insufficient (inanition zone), above another it is overloaded (rupture zone), and between them lies the sovereign interval. The document retains three interval profiles — narrow, shifted, and steep — and adds a cross-vector exploratory dimension [E], Transition Sovereignty: the capacity to convert a self-endorsed intention to disengage from a technological coupling into an effective transition, under conditions that preserve accessibility, task closure, and individual needs. Transition Resistance (TR) is introduced only as a candidate descriptive construct, not a diagnostic scale. The autism, ADHD, and epilepsy sections remain hypotheses of differential interaction between environment and regulation, not claims that these conditions are instances of the Sufficient Mirror or consequences of screen exposure. Predictability may be a legitimate adaptive relief for some autistic people; immediate reinforcement and delay sensitivity may alter the cost structure for some people with ADHD; and the epilepsy vector remains restricted to documented risk pathways such as sleep and photosensitive exposure. The paper reframes Symbiotic Adversarial Interfaces (SAI) as a Sovereignty-by-Design hypothesis: user-controlled systems that introduce the minimum effective, function-specific, reversible friction needed to preserve exercise and facilitate exit, without presuming that synthetic friction is identical to the Friction of the Real. It also records night-time screen exposure — use in bed with the room light off — as a cross-vector agenda [E] that separates the light channel from the architectural channel. Six falsifiable exploratory hypotheses are stated. Version 1.0 is a dated conceptual record: the parameters, transition metrics, clinical interactions, and engineering implementation remain open to empirical calibration and possible refutation. This record contains the canonical English version and the Portuguese version. Project website: https://www.sufficientmirror.com