The row-relative cut scales the "too strong to be absent" threshold by the axial
row's own median E^2, floored at the plain value - so it can only raise the bar,
and a row whose control class holds a single strong reflection sets it from that
one reflection. That direction invents screws: a genuine 4_2 whose 00l happen to
be observed only at l=4n reads its l=4n+2 reflections as absent and ranks
4_1/4_3 above the truth. Require three controls before the row may set the
scale; below that the row keeps the plain cut.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>