static L<IfThen> nlLogic_unsafeRulesFromAllMechLists() {
  new L<IfThen> rules;
  for (S name : ai_mechListsWithPossibleRules())
    rules.addAll(nlLogic_unsafeLHSEvalsOnly(nlLogic_parseRules(mL_raw(name))));
  ret rules;
}