I'm writing this review in order to make clear some points which seem a bit confusing about the Empire novels. Dates: -Daneel Olivaw and Elijah Baley novels take place (more or less)in the year 5,000 a.C. -The Stars like Dust 6,000-7,000 a.C. -Pebble in the Sky 13,800 a.C. -Foundation 25,000 a.C. -Foundation and Earth 25,500 a.C.
you can calculate this following R. Daneel Olivaw's life, and knowing it was created in 5,000 and that Hari Seldon was born by 20,000.
It is true that its full of mistakes and errors if we believe what was explained in Robots and Empire: -Earth should be radiactive in 150 years more or less (mandamus said). Regarding this novel, Earth was still inhabited 8,800 years afterwards -It was Mandamus, allowed by R.Giskard Reventlov, who provoked this situation, and not any nuclear war. Anyway, you can imagine that the increase of radiactivity caused a number of wars which have been blamed (afterwards) of causing the increase of radiactivity.