03:30, mirror hour

Three thirty is 03:30 on the clock: the three of the hour becomes the thirty of the minutes. The most transparent reversal in the series, where the single digit of the hour already holds the multiple of ten that appears in the minutes.

Six again, out of four digits. Six weighs proportion. The reversal makes that visual: three in the hour, thirty in the minutes, the same mark worth ten times more for standing one place to the left. Attention works the same way, measured less by how much of it there is than by where it lands.