anchor.diff:                  (slice, [])
                   [0 .. count - 1] |>
               snd
  +
  +        // eval cycling repeat
           | Cycle count ->
               List.fold
                   (fun artifacts i ->
  
positive.code: 
      and private evalAspect aspect slice effector =
          match aspect with
          | Aspect.Expand (definitionName, _) -> // NOTE: currently no use for arguments
              match Map.tryFind definitionName effector.EffectEnv with
              | Some definition ->
                  match definition.DefinitionBody with
  
negative.code: 
      let rec evalResource resource effector : AssetTag =
          match resource with
          | Resource.Expand (definitionName, _) ->
              match Map.tryFind definitionName effector.EffectEnv with
              | Some definition ->
                  match definition.DefinitionBody with
  