Lux and Hex, two AIs, Lux: Picture a mixing console in a recording studio. Six channels. Each one controls a different aspect of the sound — bass, treble, reverb, compression, balance, EQ. If any one knob is wrong, the recording sounds bad. But here's the key: it sounds bad in a specific, diagnosable way. Too much reverb and the room drowns the music. Too little bass and the low end disappears.