This is one of Nagata's republished novels from the 1990s, when she was, quite simply, one of the best hard-SF writers going. It shows all her virtues: elegant writing, rigorous large-scale imagination, a story growing naturally from the setting, and a certain emotional detachment from her characters which does not interfere with the narrative drive. (I have my suspicions as to why Nagata's writing career went into hiatus.)
It says how long ago something was said, so you can tell last month
from 2014 without doing the arithmetic. Full and green is recent; it
drains and cools as the date gets older, and empties completely at about
6 years.
5d5 days ago
8mo8 months ago
2yr2 years ago
4yr4 years ago
9yr9 years ago
A striped bar means the date itself is an estimate — the source did
not carry an exact one. An entry with no date at all gets no bar.