Epistemic Provenance: AI Trust & Source Tracer

Checked both claims and tiered them — one needs a fix before it goes in your guide.

[Tier 2 — Widely repeated, and actually FALSE]
"Humans only use 10% of their brain."
This is one of the most cited "facts" in pop psychology, but it's been debunked repeatedly. Brain imaging studies show activity across virtually the entire brain over the course of a day — no region sits permanently dormant. The myth likely originated from a misquote of early 20th-century psychologist William James and has been falsely attributed to Einstein ever since. Recommend cutting this from the study guide entirely, or flipping it into a "myth-busting" section instead of stating it as fact.

[Tier 1 — Verified]
"The Wright brothers' first powered flight was December 17, 1903, at Kitty Hawk, North Carolina."
Independently corroborated by primary historical records (Smithsonian, National Park Service archives) that don't trace back to a single origin. Safe to include as-is.

Summary table for your guide

Next steps

1. Swap the brain-usage claim for an accurate one (e.g., "different brain regions activate for different tasks, not a fixed 10%")
2. If this guide will be sold or distributed, consider running the finished draft back through this skill once more — new claims sometimes get added during editing
3. Add a one-line provenance note in your document footer using the included tag template, so future-you knows which facts were checked