The 7 in pH 7 meaning neutral comes from 1 in 1e7 molecules of water having broken apart and ionized at any given instant. Like the Taylor Swift song says, they're never ever getting back together. Ever. So the average lifespan of a rando H-O-H thrupple in plain old tap water is about half a day. So by the definition of "hydrogen atom with UUID X" in a monogamous bond with "oxy atom with UUID Y" in a monogamous bond with "another hydrogen atom with UUID Z" that relationship on average lasts about half a day before getting stirred up into a new relationship. In that sense, most water is less than a day old.
The article is defining age of water as in how long it was sealed off from the rest of the ecosystem. In that sense I have a bottle of Crown Royale containing about 60% water in my basement that's been sealed off from the environment, theoretically, for 18 years before it hit the liquor store shelf, or so the marketing claims. Actually a little longer now that it's chilling in my basement. These folks found some water that's been sealed off for a billion years.
So there's decent arguments for both that "a bucket has been sealed for a billion years" vs "this particular organization of atoms has existed substantially less than one day"
I suppose all protons are the same age and how they are configured is irrelevant?
My atoms are 13 billion years old or whatever it is. I guess you, me, and water are all the same age. After we die and desiccate our water will be joined to other fremen. Wait..
For some reason I can’t edit my comment so I’ll reply to it. Protons aren’t all the same age. One prominent example being radioactive decay (beta negative). I suppose most protons should be the same age but not all.
The 7 in pH 7 meaning neutral comes from 1 in 1e7 molecules of water having broken apart and ionized at any given instant. Like the Taylor Swift song says, they're never ever getting back together. Ever. So the average lifespan of a rando H-O-H thrupple in plain old tap water is about half a day. So by the definition of "hydrogen atom with UUID X" in a monogamous bond with "oxy atom with UUID Y" in a monogamous bond with "another hydrogen atom with UUID Z" that relationship on average lasts about half a day before getting stirred up into a new relationship. In that sense, most water is less than a day old.
The article is defining age of water as in how long it was sealed off from the rest of the ecosystem. In that sense I have a bottle of Crown Royale containing about 60% water in my basement that's been sealed off from the environment, theoretically, for 18 years before it hit the liquor store shelf, or so the marketing claims. Actually a little longer now that it's chilling in my basement. These folks found some water that's been sealed off for a billion years.
So there's decent arguments for both that "a bucket has been sealed for a billion years" vs "this particular organization of atoms has existed substantially less than one day"