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Should Meridian City charge cars to enter downtown at peak hours?

chain-eval-congestion-pricing · state: ready · 5 steps

Scoring run · NEG · v3

After comment mcZGHM (step 4)

1 run

Team A

1.156

Net score

-4.035

Comment mcZGHM · Δ -19.672 · total -4.035

Team B

3.393

Engine cross-check failed — displayed numbers are the browser recompute

  • sc_durable_traffic_reduction: recomputed 1.156007 vs stored -2.465033
  • sc_downtown_retail_sales_loss: recomputed -3.392787 vs stored -1.570237
  • total: recomputed -2.236780 vs stored state.total_points -4.035270
Step 429 LLM calls+3 atoms7 rejected
retireda_stockholm_s_city_transport_office
reliabilitya_stockholm_s_city_transport_office_2 → q 0.40
raw step payloads
{
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    {
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        {
          "text": "The transport office formally withdrew its 2006 trial evaluation this week.",
          "q_truth": 1,
          "source_kind": "user_assertion",
          "temp_atom_id": "tmp_s1_a1"
        },
        {
          "text": "An external audit found that the toll-gantry system double-counted vehicles that crossed multiple gantries on one trip.",
          "q_truth": 1,
          "source_kind": "cited_source_claim",
          "temp_atom_id": "tmp_s1_a2"
        },
        {
          "text": "The transport office stated that its headline traffic-reduction figure can no longer be relied on.",
          "q_truth": 1,
          "source_kind": "user_assertion",
          "temp_atom_id": "tmp_s1_a3"
        },
        {
          "text": "Meridian City's transport office formally withdrew its 2006 trial evaluation.",
          "q_truth": 1,
          "source_kind": "user_assertion",
          "temp_atom_id": "tmp_s2_a1"
        },
        {
          "text": "An external audit found that the toll-gantry system double-counted vehicles that crossed multiple gantries during a single trip.",
          "q_truth": 1,
          "source_kind": "cited_source_claim",
          "temp_atom_id": "tmp_s2_a2"
        },
        {
          "text": "Meridian City's transport office stated that its headline traffic-reduction figure can no longer be relied upon.",
          "q_truth": 1,
          "source_kind": "cited_source_claim",
          "temp_atom_id": "tmp_s2_a3"
        },
        {
          "text": "Meridian City previously published a flagship traffic-reduction claim of 20%.",
          "q_truth": 1,
          "source_kind": "user_assertion",
          "temp_atom_id": "tmp_s2_a4"
        },
        {
          "text": "The transport office formally withdrew its 2006 trial evaluation.",
          "q_truth": 1,
          "source_kind": "user_assertion",
          "temp_atom_id": "tmp_s3_a1"
        },
        {
          "text": "An external audit found that the toll-gantry system had been double-counting vehicles that crossed multiple gantries on one trip.",
          "q_truth": 1,
          "source_kind": "cited_source_claim",
          "temp_atom_id": "tmp_s3_a2"
        },
        {
          "text": "The transport office stated that its headline traffic-reduction figure can no longer be relied upon.",
          "q_truth": 1,
          "source_kind": "cited_source_claim",
          "temp_atom_id": "tmp_s3_a3"
        }
      ],
      "stage": "p1"
    },
    {
      "stage": "p2",
      "output": {
        "routes": [
          {
            "route_type": "primary_emission",
            "variable_id": "v_stockholm_traffic_reduction",
            "temp_or_atom_id": "tmp_s1_a1",
            "why_this_variable": "The withdrawal concerns the official Stockholm evaluation that had been evidence about how large and durable the measured Stockholm traffic reduction was.",
            "why_not_direct_axis": "It does not directly observe Meridian's expected durable traffic reduction from adopting a cordon charge; it affects the Stockholm traffic-reduction evidence input."
          },
          {
            "route_type": "primary_emission",
            "variable_id": "v_stockholm_traffic_reduction",
            "temp_or_atom_id": "tmp_s1_a2",
            "why_this_variable": "The audit finding concerns the counting method used to measure Stockholm traffic reductions and therefore belongs in the existing Stockholm traffic-reduction evidence variable.",
            "why_not_direct_axis": "It is a methodology fact about an input study, not a direct observation of the policy's expected traffic effect in Meridian."
          },
          {
            "route_type": "primary_emission",
            "variable_id": "v_stockholm_traffic_reduction",
            "temp_or_atom_id": "tmp_s3_a3",
            "why_this_variable": "The office's statement that its headline figure cannot be relied on bears on the measured Stockholm traffic-reduction issue already represented by this variable.",
            "why_not_direct_axis": "It does not itself measure Meridian's expected durable downtown traffic reduction; it undermines one source inside the Stockholm evidence variable."
          }
        ],
        "sc_actions": [],
        "uncertainty": {
          "level": "medium",
          "reasons": [
            "The submission refers to the transport office and city without naming Stockholm, but the 2006 trial and existing state make the Stockholm official evaluation the intended referent.",
            "The formal withdrawal clearly retires the official 20% trial claim; the later persistence claim is treated as reliability-reduced rather than retired because the submission specifically targets the 2006 trial evaluation and headline figure."
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        },
        "atom_updates": [
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            "reason": "first-party withdrawal",
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            "action": "create",
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            "action": "create",
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            "temp_atom_id": "tmp_s1_a2",
            "canonical_text": "An external audit found that the toll-gantry system used for the 2006 Stockholm congestion-charge evaluation double-counted vehicles that crossed multiple gantries during one trip.",
            "existing_atom_id": null
          },
          {
            "action": "reject",
            "reason": "Redundant near-duplicate of the better sourced same-submission extraction tmp_s3_a3.",
            "temp_atom_id": "tmp_s1_a3",
            "canonical_text": null,
            "existing_atom_id": null
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          {
            "action": "reject",
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            "temp_atom_id": "tmp_s2_a1",
            "canonical_text": null,
            "existing_atom_id": null
          },
          {
            "action": "reject",
            "reason": "Redundant near-duplicate of the created audit double-counting atom tmp_s1_a2.",
            "temp_atom_id": "tmp_s2_a2",
            "canonical_text": null,
            "existing_atom_id": null
          },
          {
            "action": "reject",
            "reason": "Redundant near-duplicate of the better same-submission extraction tmp_s3_a3; the Meridian wording is not adopted.",
            "temp_atom_id": "tmp_s2_a3",
            "canonical_text": null,
            "existing_atom_id": null
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          {
            "action": "reject",
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            "temp_atom_id": "tmp_s2_a4",
            "canonical_text": null,
            "existing_atom_id": null
          },
          {
            "action": "reject",
            "reason": "Redundant near-duplicate of the created withdrawal atom tmp_s1_a1.",
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            "canonical_text": null,
            "existing_atom_id": null
          },
          {
            "action": "reject",
            "reason": "Redundant near-duplicate of the created audit double-counting atom tmp_s1_a2.",
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            "canonical_text": null,
            "existing_atom_id": null
          },
          {
            "action": "create",
            "reason": "This is a new first-party statement undermining the official headline traffic-reduction figure.",
            "temp_atom_id": "tmp_s3_a3",
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            "existing_atom_id": null
          }
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        "level": "medium",
        "reasons": [
          "The submission refers to the transport office and city without naming Stockholm, but the 2006 trial and existing state make the Stockholm official evaluation the intended referent.",
          "The formal withdrawal clearly retires the official 20% trial claim; the later persistence claim is treated as reliability-reduced rather than retired because the submission specifically targets the 2006 trial evaluation and headline figure."
        ]
      }
    }
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  "merged": {
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    "rejected": [
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      "tmp_s2_a2",
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    "retired_atoms": [
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    "q_truth_updates": {
      "a_stockholm_s_city_transport_office_2": 0.4
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    "merged_same_fact": {}
  },
  "bayes_outputs": {
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            "no_reduction_or_increase": 0.5,
            "small_or_temporary_reduction": 0.25,
            "moderate_or_partly_sustained_reduction": -0.25
          },
          {
            "large_durable_reduction": -0.75,
            "no_reduction_or_increase": 0.25,
            "small_or_temporary_reduction": 0,
            "moderate_or_partly_sustained_reduction": -0.25
          }
        ],
        "averaged": {
          "large_durable_reduction": -0.55,
          "no_reduction_or_increase": 0.38500000000000006,
          "small_or_temporary_reduction": 0.1725,
          "moderate_or_partly_sustained_reduction": -0.235
        },
        "variable_id": "v_stockholm_traffic_reduction"
      }
    ],
    "p4": {
      "verdicts": [
        {
          "reason": "The atoms all bear on the same factual question of how reliable, large, and durable the measured Stockholm inner-city traffic reduction was, with methodological-withdrawal evidence appropriately discounting the same measurement claim rather than forming a separate sub-issue.",
          "status": "ok",
          "var_id": "v_stockholm_traffic_reduction",
          "recommended_action": "keep"
        }
      ],
      "warnings": [],
      "created_var_ids": [],
      "retired_var_ids": []
    },
    "llm_calls": {
      "p1": 3,
      "p2": 1,
      "p3": 24,
      "p4": 1,
      "total": 29,
      "p3_rescore": 0
    },
    "touched_vars": [
      "v_stockholm_traffic_reduction"
    ],
    "sc_points_after": {
      "sc_durable_traffic_reduction": -2.465033054058166,
      "sc_downtown_retail_sales_loss": -1.5702373639684917
    }
  }
}

A sc_durable_traffic_reduction

Increasing the expected durable reduction in downtown car traffic from a peak-hour cordon charge when side A is chosen strengthens Team A's case.

+1.156L 5.0 · q 1.00 · E[d] 0.231 · prior 0.724Δ -19.672
d 5large durable0.8%
d 3moderate durable3.8%
d 1small or temporary7.8%
d 0none87.6%

bars: belief with evidence · tick: prior-only baseline (the score is the E[d] gap between them)

⊕ blendE[u] 0.050stockholm_traffic_reduction w 1.00
v_stockholm_traffic_reductionw 1.00

How large and durable was the measured inner-city traffic reduction associated with Stockholm's 2006 congestion-charge trial and later permanent charge?

no reduction or increase0.0088.8%
small or temporary reduction0.337.5%
moderate or partly sustained reduction0.673.4%
large durable reduction1.000.3%
sidsourceatompushes
mcZGHMcitednewAn external audit found that the toll-gantry system used for the 2006 Stockholm congestion-charge evaluation double-counted vehicles that crossed multiple gantries during one trip. no reduction or increase +0.56
T8E5hhcitedretiredStockholm's city transport office's toll-gantry-based evaluation found that inner-city traffic dropped by about 20% almost immediately after the 2006 congestion-charge trial began. large durable reduction +0.78
T8E5hhcitedq 0.40Stockholm's city transport office's toll-gantry-based evaluation found that Stockholm's inner-city traffic reduction persisted after the congestion charge was made permanent. large durable reduction +0.28
mcZGHMassertednewStockholm's city transport office formally withdrew its 2006 congestion-charge trial evaluation in the week of the submission. no reduction or increase +0.57
mcZGHMcitednewStockholm's city transport office stated that its headline traffic-reduction figure from the 2006 trial evaluation can no longer be relied upon. no reduction or increase +0.55
14qSjccitedAn independent university research group's evaluation of Stockholm's 2006 congestion-pricing trial found roughly a 20% reduction in traffic crossing into Stockholm's inner city during the trial period. moderate or partly sustained reduction +0.85

B sc_downtown_retail_sales_loss

Increasing the expected reduction in downtown retail and small-business sales from a peak-hour cordon charge when side A is chosen strengthens Team B's case.

-3.393L 3.0 · q 1.00 · E[d] 1.131 · prior 0.608
d 5strong1.8%
d 3moderate19.3%
d 1mild46.2%
d 0none32.7%

bars: belief with evidence · tick: prior-only baseline (the score is the E[d] gap between them)

⊕ blendE[u] 0.297stockholm_retail_sales_decline w 0.50london_retail_sales_decline w 0.50
v_stockholm_retail_sales_declinew 0.50

How large and durable was any retail sales decline inside Stockholm's congestion-charge zone after implementation?

no decline or increase0.0045.2%
small or temporary decline0.3342.3%
moderate or persistent decline0.679.1%
large persistent decline1.003.4%
sidsourceatompushes
1FilU9citedStockholm's downtown retail association reported a mid-single-digit sales dip in the congestion-charge zone during the first year of implementation. small or temporary decline +0.63
v_london_retail_sales_declinew 0.50

How large and durable was any retail sales decline inside London's congestion-charge zone after implementation?

no decline or increase0.0046.0%
small or temporary decline0.3310.5%
moderate or persistent decline0.6733.9%
large persistent decline1.009.6%
sidsourceatompushes
1FilU9citedLondon shopkeepers' groups have reported for years that retail sales declined in the congestion-charge zone. moderate or persistent decline +0.49

Highlights show what comment mcZGHM changed relative to step 3 (comment 1FilU9).

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