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feat(beliefs): represent unknown explicitly; absence of evidence is not falsity

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A belief with no live evidence on either side now derives the status
'unknown' instead of sitting tentatively at its prior. Withdrawing every
piece of evidence leaves the proposition unknown, never rejected, and
introspection answers 'I do not know whether X' rather than quoting the
prior. Hypotheses keep their own status because they are proposals by
construction. Migration 0019 widens the status constraint; the docs define
every epistemic number and how absence of evidence is handled.
This commit is contained in:
Andy Dixon
2026-08-05 23:04:15 +01:00
parent 9b2521bffd
commit 08a265f0fa
8 changed files with 91 additions and 4 deletions
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web/static/app.css
+1 -1
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@@ -171,7 +171,7 @@ tr.dayrow td { background: var(--surface-2); font-weight: 600; font-size: .78rem
/* Beliefs */
.badge.st-hypothesis { background: var(--surface-2); color: var(--muted); } .badge.st-tentative { background: #fef3c7; color: #b45309; } .badge.st-likely { background: #dbeafe; color: #1d4ed8; }
.badge.st-accepted { background: var(--ok-soft); color: var(--ok); } .badge.st-contested { background: #fde68a; color: #92400e; } .badge.st-rejected { background: var(--danger-soft); color: var(--danger); } .badge.st-superseded { background: var(--surface-2); color: var(--muted); text-decoration: line-through; }
.badge.st-accepted { background: var(--ok-soft); color: var(--ok); } .badge.st-contested { background: #fde68a; color: #92400e; } .badge.st-rejected { background: var(--danger-soft); color: var(--danger); } .badge.st-superseded { background: var(--surface-2); color: var(--muted); text-decoration: line-through; } .badge.st-unknown { background: var(--surface-2); color: var(--muted); border: 1px dashed var(--border); }
:root[data-theme="dark"] .badge.st-tentative { background: #3a2a0a; color: #fcd34d; } :root[data-theme="dark"] .badge.st-likely { background: #172554; color: #93c5fd; } :root[data-theme="dark"] .badge.st-contested { background: #3d2e05; color: #fbbf24; }
.conf.big .conf-bar.wide { width: 100%; height: 10px; margin: .3rem 0 .8rem; }
ul.ev li { padding: .4rem 0; border-bottom: 1px solid var(--border); } ul.ev li:last-child { border-bottom: 0; } ul.ev li.retracted { opacity: .55; }