Time In Future Histories

I have said before that future histories and time travel fiction, both pioneered by HG Wells and fully developed by Poul Anderson, have in common that they deal in different ways with time. A lot of historical time - enough for a city to grow, engulf a village, then recede - passes in Anderson's Starfarers and a lot of geological time - enough for humanity to become extinct and be recreated - passes in his Genesis and there is time travel through a future history in his There Will Be Time. 

Although I think that Robert Heinlein's Future History is a work of merit, for me now its main long term contribution is that it inspired Anderson's Psychotechnic History which was then superseded by Anderson's Technic History. We have mentioned five future histories by Anderson and have not exhausted the list and have come to that time in the evening when I try to do some other reading before turning in.

Tempus fugit.