{
  "name": "Which everyday feedback loops were tested: an evidence ledger",
  "desc": "Which everyday feedback loops were tested: an evidence ledger, one row per claim about a loop. Each row names the loop, the claim, the kind of evidence, the study, the DOI and place in the source, and read_level, which records how much of each source was read: full text, abstract only, or citation only. Rows read at citation level report only what a paper's title says; rows read at abstract level paraphrase the abstract and carry the status \"status not assigned\" in column tag, because an abstract alone cannot settle a replication tag. Quoted values: the only figures taken from a source are in the thermostat row (setpoint 20 °C, dead band 1 °C, about 2 °C cooler; the 2 °C figure is also given in columns quoted_value and unit, with its conditions in qualifier and \"about\" in approx), from Seri et al. 2021, Sensors 21(11): 3685, doi:10.3390/s21113685, sections 3.1 and 3.2, licensed CC BY 4.0; this site's CC BY license does not cover the quoted values. Sources whose text is openly licensed: Dufour et al. 2026, Seri et al. 2021 and Doroudi et al. 2020 (CC BY 4.0); Maxwell 1868 (public domain). The other sources' terms apply to their own content. License for this site's selection, arrangement and notes: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Checked 2026-11-06.",
  "lic": "CC BY 4.0",
  "lic_url": "https://creativecommons.org/licenses/by/4.0/",
  "by": "Feedback & Forgetting",
  "url": "https://feedbackandforgetting.com/systems-loops/feedback-loops/",
  "from": [
    "Crossref work records for the three papers read at citation level (titles only: Sugiyama et al. 2008, Stern et al. 2018, Cronin, Gonzalez & Sterman 2009) and the publisher abstracts deposited in the Crossref records of Kempton (1986), Booth Sweeney & Sterman (2000) and Sterman (1989), paraphrased",
    "Dufour et al. (2026), PNAS Nexus, doi:10.1093/pnasnexus/pgag101, Introduction and Figure 2 (CC BY 4.0)",
    "Maxwell (1868), On governors, Proceedings of the Royal Society of London 16, pp. 270-272 (public domain)",
    "Seri et al. (2021), Sensors 21(11): 3685, doi:10.3390/s21113685, sections 3.1 and 3.2 (CC BY 4.0)",
    "Doroudi et al. (2020), PLOS ONE 15(2): e0224761, doi:10.1371/journal.pone.0224761, State of the art section (CC BY 4.0)"
  ],
  "how": "Compiled by Feedback & Forgetting from the data listed",
  "data_by": [
    "Dufour, O., Nicolas, A., Rodney, D., Cordes, J., Schadschneider, A., & Tordeux, A. (2026). Noise-induced instability of uniform flow in single-file traffic systems. PNAS Nexus 5(4): pgag101, doi:10.1093/pnasnexus/pgag101, CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/)",
    "Maxwell, J. C. (1868). On governors. Proceedings of the Royal Society of London 16, 270–283, doi:10.1098/rspl.1867.0055. Public domain (author d. 1879)",
    "Seri, F., Arnesano, M., Keane, M. M., & Revel, G. M. (2021). Temperature sensing optimization for home thermostat retrofit. Sensors 21(11): 3685, doi:10.3390/s21113685, CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/)",
    "Doroudi, R., et al. (2020). Effects of trust-based decision making in disrupted supply chains. PLOS ONE 15(2): e0224761, doi:10.1371/journal.pone.0224761, CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/)",
    "Titles only, from Crossref: Sugiyama et al. 2008; Stern et al. 2018; Cronin, Gonzalez & Sterman 2009",
    "Abstracts deposited in Crossref, paraphrased (publishers' terms apply): Kempton, W. (1986), Cognitive Science 10(1), doi:10.1207/s15516709cog1001_3; Booth Sweeney, L., & Sterman, J. D. (2000), System Dynamics Review 16(4), doi:10.1002/sdr.198; Sterman, J. D. (1989), Management Science 35(3), doi:10.1287/mnsc.35.3.321"
  ]
}