User blog comment:Jazon Naparleon/Questions of Romans and Mongols/@comment-1777104-20120816180612/@comment-1777104-20120817185523

You are correct, Guns. The plausibility follows the conditions set by the environment. Removing the storm in the case of Japan and the Mongols, would change the playing field, leaving the decisions and actions of an uneffected navy to play out a plausible history. Weather caused a difference in the pilgrims' journey -- they were heading for the "sunny south" near Jamestown -- so removing the conditions somehow would be ASB. However, if the pilgrims had sailed out earlier their planned destination would have been reached. That alternate history would not be ASB.