Close your laptop lid and open it 1,000 years later to carry on your Baldur's Gate 3 save as if nothing had happened.
I once speculated to a friend about 15 years ago that eventually solid state storage space would be so fast that it could serve as active memory. I can't wait to tell him.
Such retention times are often probabilistic (ie. some percentage of bits have retained their proper value) and an "up to" value, which is negatively influenced by such things as the storage temperature and background radiation.
In practice, it might be that the only useful retention time is only a small digit number of years.