The plot is centered on a woman. She had a husband who was a scientist. He always told her stories about the future and their technology. She doesn't care much about it. I don't remember why but the man died, leaving her alone.
The years passed, and when she was older she was sick. She realized that the future that her husband told her was now. Nanotechnology, capable of curing diseases, modified bodies, space travel etc.. The story unfolded around the woman and all the experiences with this technology.