Yeap this is correct. I was just trying to illustrate the general idea in my reply. Things get funny on the other side too when you start considering decay and halflife as well.

I mean, technically yes but typically when they say something is this old they mean in the “last formed” state. Because while it’s probably true that everything has always existed from the beginning of time, it hasn’t stayed in the same state or form for very long.

It’s like saying that cake has always existed because it’s made of flour which is made from carbon which was created at the big bang.

But in truth, cake never existed before some one made the recipe for it and started arranging ingredients in a particular way to create cake.