I remember learning to play pitch-and-putt (simplified golf) and when I finally got the swing right, there was a “thunk” sound twice or three times as my ball bounced from tree trunk to tree trunk. It was like some kind of nature-based pinball. I couldn’t believe it. When the disbelief passed later that day I couldn’t stop laughing.
Does that third also take into account any differences in manufacturing them? In other words, the entire lifecycle.