Evidence Before Certainty
The principle that decisions should be based on evidence, not assumptions — know what you know and what you don't know.
The Core Argument
Good decisions are based on evidence, not assumptions. Certainty is a feeling, not a fact. We must know what we know — and what we don't know.
In a world of abundant intelligence, it is tempting to trust our intuition. But intuition is not evidence. It is a shortcut.
Evidence is the foundation of good judgment. It is what separates guesswork from informed decision-making. When we base decisions on evidence, we are more likely to get good outcomes.
Evidence before certainty is a discipline.
Why Evidence Matters
The importance of evidence in decision-making.
Evidence reduces error
Evidence helps us avoid mistakes. It provides a basis for decisions that is more reliable than intuition or opinion.
Evidence enables learning
When we base decisions on evidence, we can learn from outcomes. We can see what worked and what didn't.
Evidence builds trust
When people see that decisions are based on evidence, they trust the process. Evidence is the foundation of credibility.
Evidence challenges assumptions
Evidence forces us to question our assumptions. It is the antidote to confirmation bias.
The Acacia perspective:
Evidence is not a luxury. It is a necessity. Without evidence, we are guessing. With evidence, we are learning.
What Evidence Looks Like
The forms evidence can take.
Data and metrics
Quantitative evidence from data, metrics, and measurements. This is the most familiar form of evidence.
Research and studies
Evidence from research, studies, and academic literature. This provides a broader context for decisions.
Case studies
Evidence from real-world examples and case studies. This provides practical, contextual insight.
Expert testimony
Evidence from experts and practitioners. This provides specialised knowledge and experience.
Key insight:
The best evidence combines multiple forms. Data tells us what happened. Research tells us why. Case studies tell us how. Expert testimony tells us what matters.
How We Implement This Principle
Evidence before certainty in practice.
Ask for evidence
We ask for evidence in every decision. What do we know? What is the basis for this decision?
Document evidence
We document the evidence that informs our decisions. This creates a transparent record.
Evaluate evidence quality
We evaluate the quality of evidence. Is it reliable? Is it relevant? Is it current?
Acknowledge uncertainty
We acknowledge what we don't know. We are honest about uncertainty and gaps in evidence.
The Acacia perspective:
ContextOS is designed to support evidence-based decisions. It provides the structure to gather, document, and evaluate evidence.
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