I have no idea what I'm looking at.
Notice how the observed failure rate looks like a bathtub. Imagine a car that can have serious problems when someone buys it new, since there could be a manufacturing defect. After some time the failure rate is lower because it's been proven. As it ages, the failure rate increase again as parts wear out.
Imma be honest, I'm more confused with your explanation. Lmao 😆😅
There's a wikipedia page for it -
https://en.wikipedia.org/wiki/Bathtub_curveNot that reading wikipedia would help you understand, I'll try to explain it instead.
The graph shows a failure rate on the Y axis (up and down) and total amount of time passed (left to right).
At the beginning there's a higher failure rate which lowers in the middle and then rises again at the end, forming a U bathtub shape.
This graph could be applied to many things, for example trees, people, or cars.
nicefish used cars as an example, but if you were to use biological creatures as an example instead you could think of it like: When you are born it's a lot easier for you to die. You're small and weak and you could just die randomly like infant mortality or miscarriage. As you get older it's less likely that you will die; once you're 5+ years old it's a lot less likely that you'll just randomly die. But there is always a non-zero chance that you could randomly die. That's why the U shaped graph never touches the bottom, there's never a failure rate of 0.
Once you get older the chance of dying again increases due to your parts wearing out.
The green line represents the constant danger of death at any moment.
The red line on the graph visualizes the chance of dying when you are young, going down as you get older.
The yellow line on the graph visualizes the chance of you dying from getting old, going up as you get older.
These three factors added together becomes the blue bathtub curve (a graph of your chance of dying by age)