Not all claims are equal. Vinthony uses five labels to describe how much weight to give a claim. These labels appear inline in lessons, topic hubs, and tools whenever a specific claim is load-bearing.
Strong evidence
Convergent, replicated findings across multiple independent, well-designed studies.
Examples
- Smoking causes lung cancer.
- Sleep restriction impairs cognitive performance.
- Index-fund investing beats most active funds over 20+ years after fees.
- Strength training reduces all-cause mortality in older adults.
Moderate evidence
Consistent findings from a handful of well-designed studies, or strong observational data with plausible mechanisms.
Examples
- Implementation intentions improve habit follow-through.
- Cognitive behavioural therapy reduces symptoms of moderate depression and anxiety.
- Higher-protein diets help preserve lean mass during weight loss.
Emerging evidence
Promising early findings — small studies, animal data, single-group trials — not yet replicated at scale.
Examples
- Specific timing of light exposure (e.g. morning sun) influences cortisol rhythm.
- Time-restricted eating produces modest metabolic effects in some populations.
- Some peptides show benefits in early human trials but lack long-term safety data.
Expert opinion
Reasoned synthesis by people with deep domain experience — useful, but not a substitute for evidence.
Examples
- Most experienced founders advise validating demand before building.
- Trauma-informed therapists generally recommend stabilisation before processing.
- Career advisors broadly agree that durable skills compound more than degrees.
Speculative
Scenarios, predictions, or frameworks that are not falsifiable today. Useful for planning, not for forecasting.
Examples
- Specific predictions about which jobs AI will displace by 2030.
- Geopolitical scenarios for the next decade.
- Long-tail health protocols without human RCT data.
How labels are applied
Most lessons use a mix of labels. A lesson on sleep, for example, might draw “strong” conclusions about consistency and duration, “moderate” conclusions about caffeine timing, and “emerging” framings around specific supplements or wearables. The reader should be able to see at a glance which parts of an argument they can lean on.
When evidence changes
Labels are not permanent. As studies replicate or fail to replicate, as long-term safety data accumulates, or as expert consensus shifts, labels are revised. Material revisions are dated in the lesson. See editorial standards for the update process.
What this policy is not
This is a publication policy, not a regulatory framework. Labels do not make a claim safe to act on without professional input. Read the relevant disclaimer — medical, financial, or mental-health — before applying advice in your own life.