The asymmetry
The ladder is symmetric and the operator is not.
The gate ladder treats descent and ascent as the same mechanism running in two directions: drawdown from Equity Peak High deepens, the gate contracts and the tier ceiling drops; the account recovers, the gate lifts and the ceiling rises again. Mechanically it is one rule. Behaviourally the two directions could not be less alike. Compression arrives with the emotional weather already agreeing — losses have happened, caution feels correct. Re-expansion asks the operator to raise exposure at the moment they have been most recently punished for having it.

