I have experimented with an app that always displays a couple of major events in the past and some in the future (including life expectancy) on a timeline. Howe

I have experimented with an app that always displays a couple of major events in the past and some in the future (including life expectancy) on a timeline. However, after a couple of days I couldn't care less about this information, because it changes so unnoticeably and slowly. It didn't help me at all to get a sense for these time scales.