Sunday, 20 November 2016
Society is complex and interconnected. Systematic improvements, as opposed to random alterations, in ancient society would require the application of knowledge and technology, not just the assassination of a single ruler or the reversal of the outcome of a single battle. SM Stirling shows us this process occurring. His Nantucketers and their allies follow the lead of Martin Padway, who prevents the Dark Ages in L Sprague de Camp's Lest Darkness Fall, and their entire project would be prohibited by Poul Anderson's Time Patrol if that organization had existed in this timeline.
Anderson wrote novels in which time travelers cannot change the past and a series in which they are prevented from changing the past but no work (?) in which anyone succeeds in changing the past - except the Neldorians whose alteration is undone by Time Patrollers. There is no Anderson work in which the good guys change the past and it stays changed.