The uncertainties in the Unknown Head and their consequences in the Partzufim: opposites that all exist.
radla holds opposites that all exist. Investigation cannot specify them as opposites; the cosmic-philosophical insight is that opposite-but-coexisting is the underlying mode at the radla level.
Op. 86 develops a counterintuitive feature of radla. At lower cosmic levels, structural opposites cannot coexist (a thing is either Chesed or Gevurah, not both). At the radla level, opposites all exist — together, structurally, without contradiction. Klach's reader needs to understand what this means structurally.
The Op. 8 doctrine — Sefirot can appear in contradictory likenesses — is a downstream-cosmic version of the radla principle. At the prophetic level, the same Sefirah can appear two contradictory ways because the Sefirah has no intrinsic form. At the radla level, this is generalised: the structural opposites (active-receptive, masculine-feminine, kindness-judgment, etc.) all exist in the radla without needing to differentiate.
The consequence: when you investigate the Partzufim and find apparent contradictions in the cosmic structure (one Lurianic source says A, another says non-A), you should not try to harmonise them at the radla level. The radla genuinely contains both A and non-A; the contradiction at the lower level is the operational form of the upper-level coexistence.
This structural-philosophical claim is deep. It says that the cosmic system, at its highest concealment, is more than what any single operational stance can capture. The operational levels are partial views of a fuller reality that radla holds as a whole.