{
  "title": "Newcomb's problem: argument validity",
  "description": "Validity check of the one-box and two-box arguments in Newcomb's problem as written in standard form on this page: each conclusion follows from its premises, which premise each needs (with a counterexample when it is dropped), and the range of p over which the two recommend opposite acts. Validity says nothing about which premises are true. Computed 2026-10-31. License CC BY 4.0.",
  "license": "CC BY 4.0",
  "license_url": "https://creativecommons.org/licenses/by/4.0/",
  "creator": "Puzzles, Charts & Dilemmas",
  "page": "https://puzzleschartsanddilemmas.com/puzzles/newcombs-problem/",
  "derived_from": [
    "Computed by Puzzles, Charts & Dilemmas from the arguments in standard form on this page",
    "The two rules as described in Paul Weirich, Causal Decision Theory, Stanford Encyclopedia of Philosophy (substantive revision 2024-10-24), https://plato.stanford.edu/entries/decision-causal/ (facts paraphrased, no text reproduced), section 2.1"
  ],
  "method": "Compiled by Puzzles, Charts & Dilemmas from the data listed"
}