{
  "source_facts": [
    "source coordinates and roles",
    "I-S=P-R=598",
    "L-I=N-P=2",
    "L-S=N-R=600",
    "T=q+8993"
  ],
  "coordinate_conventions": [
    "M=-x about January AD1",
    "components center+/-1/4"
  ],
  "unknown_maps": [
    "F=q+f",
    "H=q+h",
    "G=M(H)",
    "RN=y+alpha",
    "RF=-y+beta"
  ],
  "transport_requirements": [
    "RN(T(q))=F(q) on Flood branch",
    "RF(T(q))=G(q) on Shem branch"
  ],
  "additional_alignment_X": "Make the chosen cross-index source endpoints coincide after their different forward translations",
  "source_duration_does_not_itself_assert_X": true,
  "C270_fixed_intercepts_are_not_independent_inputs": "They were induced from the existing5290/5888 maps; freezing them would import the conclusion",
  "C274_reduced_MT_equation_must_not_be_used_as_raw_input": true,
  "C271_fixedJ1_match_counts_not_extended_to_free_delta": true,
  "coincident_images_do_not_identify_source_events": true,
  "no_inference_of_all_profile_increment_necessity_from_one_rectangle": true,
  "strongest_unresolved_item": "Why the tagged cross-index alignment X should be required beyond its coherent role in the declared construction",
  "next_proposed_step": "C277: extend the same alignment across the existing six C271 bindings, checking source-index boundaries and counterpart availability without adding source events",
  "next_step_executed": false
}