Tally Marks
Notching bones or wood to count items, days, or lunar cycles; the earliest form of data recording.
Core metadata
- ID: tally_marks
- Era: Ancient
- First known date: -10000 (millennium)
- Region: Global / multiple regions
- Review status: structurally_validated
- Maturity: N/A
Prerequisites
Dependents
Fields
- None.
Node sources
- Systematic bone tool production at 1.5 million years ago (Nature, 2025, primary_paper) • Supports: edge, node
Prerequisite edge evidence
Edge/source evidence summary:
- Prerequisite edges: 2
- Average edge confidence: 72%
- Prerequisite sources: 1
- expert_inference: 2
| Prerequisite | Type | Confidence | Evidence level | Note | Sources |
|---|---|---|---|---|---|
| Bone Tool Making (bone_tool_making) | enabling | 68% | expert_inference | Bone Tool Making provides a capability that enables this technology without being the only possible path. |
|
| Early Symbolic Communication (early_symbolic_communication) | historical_predecessor | 75% | expert_inference | Early Symbolic Communication is an earlier historical predecessor or foundation, not a one-to-one engineering dependency. | No sources recorded. |
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