100,000+ pieces purchased and 4 errors, let's put that into perspective

I recently passed 100,000 pieces purchased across numerous sets. I only had to contact Lego twice for missing pieces (one in the Goonies set, and three in The Great Wave). That's a manufacturing/packaging accuracy rate of 99.996 percent. That is astonishing. If you made one decision every minute, without sleeping, you would make 21 mistakes a year. For every million pieces shipped, Lego messes up 40 times. I know I'm conflating manufacturing error with packaging error. Technically I'm...