That's an interesting contrast. I mean, you're correct, but why is the acronym "between" instead of "before"?
As the article describes, when replacing a part costs a comparable amount to the price of a brand-new appliance, people buy new appliances. With this mindset, the correct term is no longer "between" failures - when you might replace a part and average the described time until the next failure - but "before" failure - at which point you replace the device and buy a new one.
As the article describes, when replacing a part costs a comparable amount to the price of a brand-new appliance, people buy new appliances. With this mindset, the correct term is no longer "between" failures - when you might replace a part and average the described time until the next failure - but "before" failure - at which point you replace the device and buy a new one.