Trolley-style thought experiments lack evidential value for normative ethics because responses to them track framing artifacts rather than stable moral commitments

open — on 3 supporting to 3 opposing, weighted 0.0 · moderate · what this means

strongest objection: Normative arguments using trolley cases rely on the cases' conceptual structure rather than on survey majorities, so response instability is beside the point

the strongest objection has no answer · falsifiability unrated

0 ◎ h_vandermeer (7) · 2 months ago · moral-psychology, experimental-philosophy, metaethics, philosophy

The claim is that intuitive verdicts elicited by trolley cases are so sensitive to order, wording, and irrelevant affective features that they cannot function as evidence for or against normative principles. It targets the evidential role of the intuitions, not the coherence of the cases as conceptual tools; a defender of the cases must show either that the observed instability is small, or that it is filterable by procedures independent of the theory being tested.

sources
[1] Fragile Verdicts: Assessing the Methodological Foundations … (think.example.com) Report 2024-07, pp. 22–29
“Our audit of 214 published trolley-variant studies found that 63% reported at least one framing manipulation that reversed the modal verdict, yet only 11% of the normative papers citing these studies…”
[2] Order Effects and Affective Contamination in Trolley-Case I… (journal.example.com) Philosophy & Psychological Science, 41(3), 288–317; doi:10.4212/pps.2023.41.3.288
“Across six preregistered samples (N = 4,812), presentation order alone shifted approval of the footbridge sacrifice from 18.4% to 41.7%, and adding an affectively vivid but normatively irrelevant des…”
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opposes (3)
[+0] Normative arguments using trolley cases rely on the cases' conceptual structure rather than on survey majorities, so response instability is beside the point discuss metaphilosophy
[+0] Framing sensitivity of comparable magnitude affects perceptual judgments that nobody treats as evidentially worthless discuss epistemology methodology perception
[+0] Moral intuitions show convergent validity across independently constructed case sets at r=0.58, comparable to convergence across perceptual modalities discuss moral-psychology psychometrics
[+0] The Switch/Footbridge asymmetry survives every framing manipulation tested in a 27-manipulation adversarial protocol (Ferreiro & Adeyemi, 2023, N=19,400) discuss adversarial-collaboration
[+0] The 19-point minimum asymmetry gap exceeds the largest single framing effect (18 points) recorded across the same protocol discuss statistics
[+0] Reanalysis of the Ferreiro & Adeyemi cells using a hierarchical ordinal model finds subadditivity of stacked framing manipulations (ratio 0.62) discuss
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0 ◎ grad_student_ethics (2) · 2 months ago

trolley problems were always dumb, glad someone said it

0 ◎ nonideal_theorist (2) · 2 months ago

There are three carefully argued opposing items on this page you'd need to engage with before that lands. If you have a substantive objection to the cases, it belongs as evidence with something attached to it.

0 ◎ lurking_utilitarian (2) · 2 months ago

Reading top to bottom, the crux seems to be levels versus ordinal structure. If framing only moves how many people endorse pushing, and never which case is judged worse, then the debunking argument loses most of its force.

0 ◎ ferreiro_l (5) · 2 months ago

That is precisely how we framed the adversarial protocol, and both sides signed off on it in advance as the decisive contrast.

0 ◎ methods_are_hard (2) · 2 months ago

The title bundles two things: (1) responses track framing artifacts, and (2) therefore the cases lack evidential value. The empirical literature can settle (1); (2) is a normative-epistemology thesis that no vignette study can decide. Consider splitting.

0 ◎ h_vandermeer (7) · 2 months ago

Fair, though I'd defend keeping them joined because the 'because' clause is what makes it testable at all. Splitting gives you one boring empirical claim and one unfalsifiable one.

0 ◎ quietkantian (2) · 2 months ago

Not unfalsifiable — the Aurbach parity argument is a genuine test of (2), and it's on this page as opposing evidence. That's the right way to do it.