Six Narratives

James Blish's future historical and other related writings present six long narratives:

from the discovery of anti-agathics and antigravity to the creation of new universes;

from the development of pantropy to Adapted Men throughout the galaxy;

from Haertel's tree hut to first contact with the telepathic Central Empire;

from first contact with the Angels to long term dealings with the Heart Stars;

from Martels' radio telescope and Wald's invention of the Dirac transmitter to an expanding intergalactic civilization and mystical immortality;

from Roger Bacon in the thirteenth century to contact with Lithia in the mid-twenty-first century.

Bacon and Einstein are in many timelines, Haertel in four, the Dirac transmitter in two and Lithia in two.