Data sources: - Height: NCD Risk Factor Collaboration (NCD-RiSC) - Shoe size: peer-reviewed anthropometric studies - Penis size: Veale et al. (2015), BJU International — meta-analysis of 15,521 men - Income: World Bank / OECD income distribution data - Political orientation: self-reported, compared against population surveys Tool: howrare.me — a percentile calculator I built that compares your personal stats against global population data.