I would say, rather, "...to which we don't differentially attribute causes other than the passage of time."
The distinction is important to me, because it gets at what I expect progress in fighting "aging" to look like: as we understand more about the causes and characteristic properties of various physical and mental changes, we are less inclined to describe them as caused by "age" in some vague handwavy way, even if they normally come with the passage of time... we will think of them as caused by a wide range of mostly unrelated diseases and syndromes, all of which happen to become more likely as we age for various different reasons.
And as we learn to prevent or treat those changes, we won't think of that as defeating "aging," we will think of it as defeating those specific diseases and syndromes. After a few generations of this, we will not think of ourselves as having made any progress on defeating "aging", even though most people will live longer healthier lives than their grandparents did.
I expect that approach to hit diminishing returns, i.e., each aditional year of expected lifespan will require solving a greater number of distinct deceases than the previous one.
Google's announcement, Time magazine rather sensationalist headline.
In any case, it's nice to know that Google set its sights to "challenge ... aging and associated diseases". Apple's Tim Cook:
For too many of our friends and family, life has been cut short or the quality of their life is too often lacking. Art is one of the crazy ones who thinks it doesn’t have to be this way.
One more step towards "world optimization".