← Cockpit
246_018predictionEnergyAI-timing

Killer app of compact fusion reactors will be interplanetary/interstellar propulsion, not data centers.

Predictor: Alex Wissner-Gross · ep#246 "SpaceX Goes Public, Claude's Mythos Release, and the US Data Center Delay | EP #246" · source

Prior probability
45.0%
Current probability
36.0%
evolves via intake + LBP
Conviction
3/5
Signal quality
C
Resolution
pending
Window
2026-04-30 – 2029-11-30
Edges in / out
10 / 5
Tickers exposed
36

Prediction text

Killer app of compact fusion reactors will be interplanetary/interstellar propulsion, not data centers. | I suspect the killer app of compact fusion reactors won't be for data centers on land. It won't be for data centers in orbit. It's going to be for interplanetary, maybe even interstellar propulsion.

Verbatim quote

From episode "SpaceX Goes Public, Claude's Mythos Release, and the US Data Center Delay | EP #246"
I suspect the killer app of compact fusion reactors won't be for data centers on land. It won't be for data centers in orbit. It's going to be for interplanetary, maybe even interstellar propulsion.

Predictor: Alex Wissner-Gross

κ + Brier as of 2026-05-22
κ (discount)
0.844
Brier
0.0341
excellent
Hits / Misses
6 / 1
of 11 resolved
Hit rate
54.5%
Calibration plot (stated vs observed)

Evidence about this node from Alex Wissner-Gross is multiplied by κ in /api/intake. Lower κ = less weight; floors at 0.10 (effectively silenced) and caps at 1.00 (full weight).

Reference class

Not linked

This node isn't linked to a reference class. The Bayesian update applies without outside-view blending.

Probability over time

4 prob_history rows
0%25%50%75%100%prior 45%2026-04-302026-05-032026-05-10
intake v2milestone miss sweeplbp propagationreference class assignedlegacy v1prior_prob (analyst seed)current = 36.0%

Milestone chain

Pre-event signals (upstream prereqs + window checkpoints) → resolution event → downstream cascades. Status/dates update from linked nodes; re-derive nightly via scripts/ops/derive_milestones.py.
Leading chain: 5 fired ✓ · 4 pending
  1. 2026-06-01 → 2026-12-31pendingHelicity Space demonstrates plasma jet reconnection (pre-fusion-net-gain milestone)
    How: Helicity Space publicly reports successful plasma-jet reconnection lab demonstration per its 2026 product roadmap
    Source: deep_research_enrichedconf 55%
  2. 2026-09-01 → 2027-12-31pendingNASA NIAC awards Phase II/III to compact-fusion propulsion concept
    How: NASA NIAC press release announces a Phase II or Phase III award for a compact fusion or magneto-inertial fusion propulsion study (Helicity, Pulsar, Princeton Satellite, or similar)
    Source: deep_research_enrichedconf 50%
  3. 2027-01-01 → 2028-12-31pendingHyperscaler announces orbital data-center deployment (counter-thesis check)
    How: AWS / Google / Microsoft / Starcloud announce an orbital DC deployment with compact-fusion power source, which would partially refute the thesis if it precedes propulsion use
    Source: deep_research_enrichedconf 40%
  4. 2027-06-01 → 2029-06-30pendingFirst crewed/uncrewed spacecraft contract using compact fusion propulsion
    How: NASA, DARPA, SpaceX, or Blue Origin sign a procurement or partnership for a fusion-propelled spacecraft (including DRACO-style nuclear thermal hybrids that incorporate compact fusion stages)
    Source: deep_research_enrichedconf 45%
  5. 2028-06-01 → 2029-11-30pendingCompact fusion propulsion sub-scale flight demonstration
    How: First sub-scale in-space test of a compact fusion (magneto-inertial or aneutronic) propulsion system, validating thrust generation in vacuum
    Source: deep_research_enrichedconf 30%
  6. 2036-09-06pendingMoon base will exist in 10 years

What if this resolves?

Clamp this prediction TRUE or FALSE and run a counterfactual Gibbs sample. Surfaces the predictions whose marginals shift most under that assumption.
(live posterior: 36%)

Click a button to clamp this prediction and run a Gibbs sample. Returns the predictions whose marginals shift most. ~30s per run; ideal for stress-testing "if X resolves, what else moves?"

Evidence chain

Every probability update with full Bayesian provenance — chronological, latest first
LBP2026-05-10T02:00:02Z36.0%-1.3pp
Network propagation: 37.3% → 36.0%
6-iter LBP, residual 0.00584 · damping 0.5, w_intrinsic 0.5 · method lbp_v3 · run e5c18d29
LBP2026-05-03T02:00:01Z37.3%-2.3pp
Network propagation: 39.5% → 37.3%
6-iter LBP, residual 0.00677 · damping 0.5, w_intrinsic 0.5 · method lbp_v3 · run 1a683ac9
LBP2026-04-30T16:39:51Z39.5%-2.2pp
Network propagation: 41.7% → 39.5%
5-iter LBP, residual 0.00825 · damping 0.5, w_intrinsic 0.5 · method lbp_v2 · run 0c8a4ea3
LBP2026-04-30T02:18:57Z41.7%-3.3pp
Network propagation: 45.0% → 41.7%
5-iter LBP, residual 0.00825 · damping 0.5, w_intrinsic 0.5 · method lbp_v1 · run 592311ef

Network propagation neighbors

Top edges sorted by latest LBP cross-impact
All propagation →

Top incoming (parents)

Edges that influence THIS node's belief

KindNodeTheir probP(c|s=T)P(c|s=F)Δ implied
prereqS_GRID_50GW_2029
50GW grid expansion by Dec 2029
50.0%0.4500.050-0.110
killerTK09
Energy Grid Cap (Data Center Power Wall)
35.0%0.0500.450-0.050
killerTK03
AI Regulatory Moratorium (EU/US Capability Freeze)
10.0%0.0500.450+0.050
killerTK01
AGI Capability Plateau (2026-27 Training Stall)
15.0%0.0500.450+0.030
prereqSEM_042
2025 will be the definitive year that agentic systems finallKevin Weil
73.8%0.4500.050-0.019

Top outgoing (children)

Predictions THIS node influences

KindNodeTheir probP(c|s=T)P(c|s=F)Δ implied
prereq235_030
Ray Kurzweil predicts Longevity Escape Velocity (LEV) by 203Ray Kurzweil
39.2%0.7500.050-0.095
prereq246_016
Dragonfly nuclear-powered octicopter arrives at Titan in 203Peter Diamandis
35.6%0.6500.050-0.094
prereq240_036
TEPCO's restarted reactor will support 20% of Japan's electrPeter Diamandis
34.3%0.6500.050-0.081
prereq239_008
Moon base will exist in 10 yearsElon Musk
28.8%0.5500.050-0.061
prereqSEM_034
True artificial general intelligence will be achieved betweeDemis Hassabis
28.7%0.5500.050-0.060

Ticker exposure

36 ticker(s) linked

Beneficiaries (23)

APLDNVDAARMBBAITSMCEVAAISOUNCRWVSITMGTLBGOOGLMETAMRVLMSFTORCLIBMAMZNAVGOBABAAMDSFTBYQCOM

Adverse (6)

ACNCHGGCTSHIBMINFYWNS

Prerequisites (10)

Predictions that must hit first
TypePredTitleDomainLag
prereq235_038David Sinclair begins partial epigenetic reprogramming trials with Life Biosciences in March 2026.Biotech/Longevity
prereqSEM_008Training runs costing $10 billion for a single model will commence sometime in 2025.AI
prereq238_009Recursive self-improvement is already happening now (no longer three years out)AI
prereqSEM_012Nvidia quadrupled chip production output while only doubling human headcount — achieved by deploying AI coding tools (Cursor, Claude Code) across engineering.AI/Manufacturing
prereqSEM_0422025 will be the definitive year that agentic systems finally hit the mainstream.AI/Agents
prereqS_GRID_50GW_202950GW grid expansion by Dec 2029energy_grid_expansion
killerTK09Energy Grid Cap (Data Center Power Wall)
killerTK14Superbubble Pop (S&P 500 -40%, Moonshot Capital Evaporates)
killerTK01AGI Capability Plateau (2026-27 Training Stall)
killerTK03AI Regulatory Moratorium (EU/US Capability Freeze)

Dependents (5)

Predictions enabled by this
TypePredTitleDomainLag
prereq235_030Ray Kurzweil predicts Longevity Escape Velocity (LEV) by 2033.Biotech/Longevity
prereq246_016Dragonfly nuclear-powered octicopter arrives at Titan in 2034.Space
prereq240_036TEPCO's restarted reactor will support 20% of Japan's electric needs by 2040Energy
prereqSEM_034True artificial general intelligence will be achieved between 2032 and 2042 — 'first we solve AI, then use AI to solve everything else'.AI/AGI
prereq239_008Moon base will exist in 10 yearsSpace

Linked documents (2)

Auto-generated by cosine similarity from Polymarket / Manifold / EDGAR / GDELT

Raw metadata

From Thesis_Timeline_v1.0_FINAL workbook
{
  "nia": false,
  "url": "https://www.youtube.com/watch?v=cFI-SqnvQK8",
  "mode": "THESIS",
  "role": "Host",
  "context": "We're starting to see the dawn of nuclear propulsion for interplanetary spacecraft... I suspect the killer app of compact fusion reactors won't be for data centers on land. It won't be for data centers in orbit. It's going to be for interplanetary, maybe even interstellar propulsion.",
  "verbatim": "I suspect the killer app of compact fusion reactors won't be for data centers on land. It won't be for data centers in orbit. It's going to be for interplanetary, maybe even interstellar propulsion.",
  "conv_cues": "I suspect",
  "direction": "HAPPEN",
  "timeframe": "Indeterminate",
  "conv_level": "MEDIUM",
  "milestones": [
    {
      "kind": "prereq",
      "label": "Nvidia quadrupled chip production output while only doubling human headcount — achieved by deploying AI coding tools (Cursor, Claude Code) a",
      "status": "hit",
      "weight": 0.5,
      "ordinal": -9,
      "source_id": "SEM_012",
      "expected_date": "2026-04-29",
      "observed_date": "2026-04-29"
    },
    {
      "kind": "prereq",
      "label": "Training runs costing $10 billion for a single model will commence sometime in 2025.",
      "status": "hit",
      "weight": 0.5,
      "ordinal": -8,
      "source_id": "SEM_008",
      "expected_date": "2026-04-29",
      "observed_date": "2026-04-29"
    },
    {
      "kind": "prereq",
      "label": "2025 will be the definitive year that agentic systems finally hit the mainstream.",
      "status": "hit",
      "weight": 0.5,
      "ordinal": -7,
      "source_id": "SEM_042",
      "expected_date": "2026-04-29",
      "observed_date": "2026-04-29"
    },
    {
      "kind": "prereq",
      "label": "Recursive self-improvement is already happening now (no longer three years out)",
      "status": "hit",
      "weight": 0.5,
      "ordinal": -6,
      "source_id": "238_009",
      "expected_date": "2026-04-29",
      "observed_date": "2026-04-29"
    },
    {
      "kind": "prereq",
      "label": "David Sinclair begins partial epigenetic reprogramming trials with Life Biosciences in March 2026.",
      "status": "hit",
      "weight": 0.5,
      "ordinal": -5,
      "source_id": "235_038",
      "expected_date": "2026-04-29",
      "observed_date": "2026-04-29"
    },
    {
      "kind": "llm_pre_event",
      "label": "Helicity Space demonstrates plasma jet reconnection (pre-fusion-net-gain milestone)",
      "source": "deep_research_enriched",
      "status": "pending",
      "weight": 0.4,
      "ordinal": -4,
      "source_id": null,
      "confidence": 0.55,
      "source_url": "https://payloadspace.com/helicity-raises-5m-for-in-space-fusion-propulsion/",
      "expected_date": "2026-09-15",
      "research_origin": "deep_research",
      "expected_date_range": {
        "to": "2026-12-31",
        "from": "2026-06-01"
      },
      "measurement_criterion": "Helicity Space publicly reports successful plasma-jet reconnection lab demonstration per its 2026 product roadmap"
    },
    {
      "kind": "llm_pre_event",
      "label": "NASA NIAC awards Phase II/III to compact-fusion propulsion concept",
      "source": "deep_research_enriched",
      "status": "pending",
      "weight": 0.4,
      "ordinal": -3,
      "source_id": null,
      "confidence": 0.5,
      "source_url": "https://www.nasa.gov/directorates/stmd/niac/fusion-enabled-comprehensive-exploration-of-the-heliosphere/",
      "expected_date": "2027-05-02",
      "research_origin": "deep_research",
      "expected_date_range": {
        "to": "2027-12-31",
        "from": "2026-09-01"
      },
      "measurement_criterion": "NASA NIAC press release announces a Phase II or Phase III award for a compact fusion or magneto-inertial fusion propulsion study (Helicity, Pulsar, Princeton Satellite, or similar)"
    },
    {
      "kind": "llm_pre_event",
      "label": "Hyperscaler announces orbital data-center deploym
... (truncated)