From “here’s a number” to “here’s a defendable declaration”
What a normal blob says
# legacy payload
{
"temperature": 296.42,
"status": "OK"
}
- Ambiguity everywhere:
- “OK” by whose rulebook?
- Was the sensor drifting?
- Can you prove this existed then and not edited later?
What an SSMDE record says
# SSMDE payload
{
"value": { "temperature_K": 296.42 },
"align": 0.87, # bounded dial: -1 < align < +1
"band": "GREEN", # policy label from manifest cutpoints
"manifest_id": "THERMAL_LINE_COOLING_PLANT_A_v7",
"stamp": "SSMCLOCK1|2025-11-04T14:05:22Z|theta=132.77|sha256=9fde1c...|prev=72af0b..."
}
- Fact (
value) stays untouched (phi((m,a)) = m). - Stability (
align) is bounded and replayable:clamp → atanh → fuse → tanh. - Policy (
band,manifest_id) is declared, versioned, and auditable. - Proof (
stamp) binds time, content, and order.
Why this changes outcomes
Before (blobs):
• Disputes: “GREEN meant something else that day.”
• Lost context: thresholds hidden in code.
• Weak audit: screenshots, anecdotes, missing logs.
After (SSMDE):
• Reproducible meaning: manifest_id → immutable rulebook.
• Comparable risk: align ∈ (-1,+1) across vendors/sites.
• Evidentiary trail: stamp proves time + content + sequence.
• Duty-of-care: band → explicit response windows.
Side-by-side migration (copy-ready)
Legacy → SSMDE (Day-1 add-on)
legacy := { "temperature_K": 296.42 }
# 1) keep the fact
value := legacy
# 2) compute bounded stability dial
a_c := clamp(a_raw, -1+eps_a, +1-eps_a)
u := atanh(a_c)
U += w * u
W += w
align := tanh( U / max(W, eps_w) )
# 3) derive human band by manifest cutpoints
band := band_from_align(align, manifest_id)
# 4) stamp the canonical subset
canonical := { "value": value, "align": align, "band": band, "manifest_id": manifest_id }
digest := sha256(bytes(canonical))
stamp := "SSMCLOCK1|" + utc_now() + "|theta=" + monotonic_marker() + "|sha256=" + digest + "|prev=" + prev_digest
prev_digest := digest
# 5) emit
record := { "value": value, "align": align, "band": band, "manifest_id": manifest_id, "stamp": stamp }
In one line
A blob is a number; an SSMDE record is a declaration with fact, stability, policy, and proof — portable across systems, defensible under audit.
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SSMDE – Table of Contents
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