The inevitable weakness of metrics

The author, a former technology journalist, began tracking personal data over a decade ago with the initial aim of improving physical and emotional well-being, increasing outdoor activity, and introducing order into daily life. This pursuit was driven by a desire for self-knowledge rather than a focus on productivity or optimization, a perspective that contrasts with the common stereotype of self-quantifiers. The belief that increased knowledge, derived from measurement and quantification, leads to better decisions and ultimately to happier lives is deeply ingrained in Western culture, dating back to the Enlightenment and amplified in the current era of artificial intelligence. The concept of the "quantified self" was popularized by Wired magazine editors Gary Wolf and Kevin Kelly in 2007, sparking a movement focused on self-measurement. However, the author's experience suggests that while metrics can reveal useful information, they also possess a significant capacity to obscure or corrupt understanding, highlighting a fundamental duality in the nature of measurement.