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Recently, a no-go theorem that can be viewed as being stronger than Bell's theorem has been derived, based on extensions of the Wigner's friend thought experiment: the Local Friendliness (LF) no-go theorem. Here we show that the LF no-go theorem poses formidable challenges for the field of causal modeling, even when nonclassical and\/or cyclic causal explanations are considered. We first recast the LF inequalities, one of the key elements of the LF no-go theorem, as special cases of monogamy relations stemming from a statistical marginal problem. We then further recast LF inequalities as causal compatibility inequalities stemming from a n<\/mml:mi>o<\/mml:mi>n<\/mml:mi>c<\/mml:mi>l<\/mml:mi>a<\/mml:mi>s<\/mml:mi>s<\/mml:mi>i<\/mml:mi>c<\/mml:mi>a<\/mml:mi>l<\/mml:mi><\/mml:math> causal marginal problem, for a causal structure implied by well-motivated causal-metaphysical assumptions. We find that the LF inequalities emerge from this causal structure even when one allows the latent causes of observed events to admit post-quantum descriptions, such as in a generalized probabilistic theory or in an even more exotic theory. We further prove that n<\/mml:mi>o<\/mml:mi><\/mml:math> nonclassical causal model can explain violations of LF inequalities without violating the No Fine-Tuning principle. Finally, we note that these obstacles cannot be overcome even if one appeals to c<\/mml:mi>y<\/mml:mi>c<\/mml:mi>l<\/mml:mi>i<\/mml:mi>c<\/mml:mi><\/mml:math> causal models, and we discuss potential directions for further extensions of the causal modeling framework.<\/jats:p>","DOI":"10.22331\/q-2024-09-26-1485","type":"journal-article","created":{"date-parts":[[2024,9,26]],"date-time":"2024-09-26T11:48:50Z","timestamp":1727351330000},"page":"1485","update-policy":"http:\/\/dx.doi.org\/10.22331\/q-crossmark-policy-page","source":"Crossref","is-referenced-by-count":3,"title":["Relating Wigner&apos;s Friend Scenarios to Nonclassical Causal Compatibility, Monogamy Relations, and Fine Tuning"],"prefix":"10.22331","volume":"8","author":[{"given":"Y\u00ecl\u00e8","family":"Y\u012bng","sequence":"first","affiliation":[{"name":"Perimeter Institute for Theoretical Physics, Waterloo, Ontario, Canada, N2L 2Y5"},{"name":"Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada, N2L 3G1"}]},{"given":"Marina Maciel","family":"Ansanelli","sequence":"additional","affiliation":[{"name":"Perimeter Institute for Theoretical Physics, Waterloo, Ontario, Canada, N2L 2Y5"},{"name":"Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada, N2L 3G1"}]},{"given":"Andrea Di","family":"Biagio","sequence":"additional","affiliation":[{"name":"Institute for Quantum Optics and Quantum Information (IQOQI) Vienna, Austrian Academy of Sciences, Boltzmanngasse 3, A-1090 Vienna, Austria"},{"name":"Basic Research Community for Physics e.V., Mariannenstra\u00dfe 89, Leipzig, Germany"}]},{"given":"Elie","family":"Wolfe","sequence":"additional","affiliation":[{"name":"Perimeter Institute for Theoretical Physics, Waterloo, Ontario, Canada, N2L 2Y5"},{"name":"Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada, N2L 3G1"}]},{"given":"David","family":"Schmid","sequence":"additional","affiliation":[{"name":"International Centre for Theory of Quantum Technologies, University of Gda\u0144sk, 80-309 Gda\u0144sk, Poland"}]},{"given":"Eric Gama","family":"Cavalcanti","sequence":"additional","affiliation":[{"name":"Centre for Quantum Dynamics, Griffith University, Yugambeh Country, Gold Coast, Queensland 4222, Australia"}]}],"member":"9598","published-online":{"date-parts":[[2024,9,26]]},"reference":[{"key":"0","doi-asserted-by":"publisher","unstructured":"Clark Glymour. ``Markov Properties and Quantum Experiments''. 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Evans, Thomas S. Richardson, and James M. Robins. ``Introduction to Nested Markov Models''. Behaviormetrika 41, 3\u201339 (2014).","DOI":"10.2333\/bhmk.41.3"},{"key":"49","doi-asserted-by":"publisher","unstructured":"David Danks. ``Learning the Causal Structure of Overlapping Variable Sets''. In Steffen Lange, Ken Satoh, and Carl H. Smith, editors, Discovery Science. Pages 178\u2013191. Berlin, Heidelberg (2002). Springer Berlin Heidelberg.","DOI":"10.1007\/3-540-36182-0_17"},{"key":"50","unstructured":"Jonathan Barrett. ``Information processing in generalized probabilistic theories'' (2006). arXiv:quant-ph\/050821."},{"key":"51","doi-asserted-by":"crossref","unstructured":"Amin Baumeler and Stefan Wolf. ``Perfect signaling among three parties violating predefined causal order''. In 2014 IEEE International Symposium on Information Theory. IEEE (2014).","DOI":"10.1109\/ISIT.2014.6874888"},{"key":"52","unstructured":"Carla A. Ferradini, V. Vilasini, and V. Gitton. ``A causal modelling framework for classical and quantum cyclic causal structures''. upcoming (2024)."},{"key":"53","doi-asserted-by":"publisher","unstructured":"V. Vilasini and Roger Colbeck. ``General framework for cyclic and fine-tuned causal models and their compatibility with space-time''. Physical Review A 106, 032204 (2022). arXiv:2109.12128.","DOI":"10.1103\/physreva.106.032204"},{"key":"54","doi-asserted-by":"publisher","unstructured":"David Deutsch. ``Quantum Theory as a Universal Physical Theory''. International Journal of Theoretical Physics 24, 1\u201341 (1985).","DOI":"10.1007\/BF00670071"},{"key":"55","doi-asserted-by":"publisher","unstructured":"Veronika Baumann and \u010caslav Brukner. ``Wigner's Friend as a Rational Agent''. In Meir Hemmo and Orly Shenker, editors, Quantum, Probability, Logic: The Work and Influence of Itamar Pitowsky. Pages 91\u201399. Springer International Publishing (2020). arXiv:1901.11274.","DOI":"10.1007\/978-3-030-34316-3_4"},{"key":"56","doi-asserted-by":"publisher","unstructured":"Veronika Baumann and Caslav Brukner. ``Observers in superposition and the no-signaling principle'' (2023). arXiv:2305.15497.","DOI":"10.22331\/q-2024-09-25-1481"},{"key":"57","doi-asserted-by":"publisher","unstructured":"Ming Li and Paul Vit\u00e1nyi. ``An Introduction to Kolmogorov Complexity and Its Applications''. Texts in Computer Science. Springer International Publishing. Cham (2019).","DOI":"10.1007\/978-3-030-11298-1"},{"key":"58","doi-asserted-by":"publisher","unstructured":"Carlo Rovelli. ``The Relational Interpretation''. In Olival Freire, editor, The Oxford Handbook of the History of Quantum Interpretations. Chapter 43. Oxford University Press (2022). arXiv:2109.09170.","DOI":"10.1093\/oxfordhb\/9780198844495.013.0044"},{"key":"59","doi-asserted-by":"publisher","unstructured":"Andrea Di Biagio and Carlo Rovelli. ``Stable Facts, Relative Facts''. Foundations of Physics 51, 1\u201313 (2021). arXiv:2006.15543.","DOI":"10.1007\/s10701-021-00429-w"},{"key":"60","unstructured":"Christopher A. Fuchs and Blake C. Stacey. ``QBism: Quantum Theory as a Hero's Handbook'' (2016). arXiv:1612.07308."},{"key":"61","doi-asserted-by":"publisher","unstructured":"David Wallace. ``The Emergent Multiverse: Quantum Theory According to the Everett Interpretation''. Oxford University Press. Oxford (2014).","DOI":"10.1093\/acprof:oso\/9780199546961.001.0001"},{"key":"62","doi-asserted-by":"publisher","unstructured":"Daniela Frauchiger and Renato Renner. ``Quantum theory cannot consistently describe the use of itself''. Nature Communications 9, 3711 (2018).","DOI":"10.1038\/s41467-018-05739-8"},{"key":"63","unstructured":"Nick Ormrod and Jonathan Barrett. ``Quantum influences and event relativity'' (2024). arXiv:2401.18005."},{"key":"64","unstructured":"V. Vilasini and Mischa P. Woods. ``A general framework for consistent logical reasoning in wigner's friend scenarios: subjective perspectives of agents within a single quantum circuit'' (2022). arXiv:2209.09281."},{"key":"65","doi-asserted-by":"publisher","unstructured":"Giulio Chiribella, Giacomo Mauro D'Ariano, and Paolo Perinotti. ``Probabilistic theories with purification''. Phys. Rev. A 81, 062348 (2010).","DOI":"10.1103\/PhysRevA.81.062348"},{"key":"66","doi-asserted-by":"publisher","unstructured":"Markus M\u00fcller. ``Probabilistic theories and reconstructions of quantum theory''. SciPost Physics Lecture Notes (2021).","DOI":"10.21468\/scipostphyslectnotes.28"},{"key":"67","doi-asserted-by":"publisher","unstructured":"Martin Pl\u00e1vala. ``General probabilistic theories: An introduction''. Physics Reports 1033, 1\u201364 (2023).","DOI":"10.1016\/j.physrep.2023.09.001"},{"key":"68","doi-asserted-by":"publisher","unstructured":"Dan Geiger, Thomas Verma, and Judea Pearl. ``Identifying independence in bayesian networks''. Networks 20, 507\u2013534 (1990).","DOI":"10.1002\/net.3230200504"},{"key":"69","doi-asserted-by":"publisher","unstructured":"Jan T. A. Koster. ``On the Validity of the Markov Interpretation of Path Diagrams of Gaussian Structural Equations Systems with Correlated Errors''. 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