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Material Culture Object Use Duration

Subtract explicit object-use start from end markers on the same caller-supplied time basis.

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Description

Measure supplied material-object use duration.

Anthropological records preserve reported residence, exchange, use periods, prompt positions and source-qualified terms. Inclusive residence periods count a shared endpoint date, while display-coordinate rounding can still leave a location identifiable. Supplied labels require cultural, historical and consent context.

Measure supplied material-object use duration.

When to use this tool

Use Material Culture Object Use Duration when you already have recordedUseStart, recordedUseEnd and need to measure supplied material-object use duration.

How to use the tool and how it works

  1. Enter recordedUseStart, recordedUseEnd. Use the units and conventions below.
  2. Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
  3. Read signedGap. Use the output convention below.

Return recordedUseEnd-recordedUseStart with signs preserved.1

Input fieldMeaning and unitsAccepted input
recordedUseStartRecorded Use StartRequired. Finite number.
recordedUseEndRecorded Use EndRequired. Finite number.
Output fieldInterpretationReturned shape
signedGapSigned GapRequired. Finite number.
json
{
  "input": {
    "recordedUseStart": 12,
    "recordedUseEnd": 17
  },
  "output": {
    "signedGap": 5
  }
}

Limitations and assumptions

  • Use common clock/age units and definitions. Negative records remain visible; no historical period, object function, actual duration or cultural meaning is inferred.
  • Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
  • Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.

Alternative or Complementary methods

Consult original field records and community-provided meanings with the stated research method. Evaluate permissions and protection of underlying records; local balances, locators and masks do not establish cultural interpretation, authority or anonymity.

References

  1. Calculation and input contract: anthropology/material-culture-object-use-duration — tool.io

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