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R0021/2026-03-25/Q003/H2

Research R0021 — Prompt engineering definitions
Run 2026-03-25
Query Q003
Hypothesis H2

Statement

Vendor guidance is predominantly subjective, using qualitative language without measurable criteria

Status

Current: Supported

The evidence shows that the vast majority of vendor recommendations are subjective ("be clear," "provide context," "use examples") with very few quantifiable criteria (Google's temperature=1.0 recommendation being a notable exception).

Supporting Evidence

Evidence Summary
SRC01-E01 OpenAI's 6 strategies are all qualitative: "write clear instructions," "provide reference text," etc.
SRC02-E01 Anthropic recommends XML tags, role setting, and step-by-step thinking — structural but not quantifiable
SRC03-E01 Google provides one quantifiable recommendation (temperature=1.0) amid predominantly qualitative guidance

Contradicting Evidence

Evidence Summary
SRC03-E01 Google cites "up to 99% retrieval accuracy on structured data" — a rare quantifiable claim

Reasoning

Across all four vendors, the predominant pattern is qualitative guidance. Recommendations like "be clear," "provide examples," and "break tasks into subtasks" are good advice but are not measurable engineering specifications. The absence of quantifiable criteria is itself a finding relevant to the broader research question.

Relationship to Other Hypotheses

H2 is the nuanced position. H1 (predominantly quantifiable) is eliminated. H2 (predominantly subjective) is the strongest fit but H3 captures the small number of quantifiable exceptions.