This book was more of an introduction to Palpatine as he rose through the political ranks than it was about Darth Plagueis (or Hego Damask, as he was known to civilians).

Prior to reading this, I was under the impression that Plagueis had "created" Anakin via his manipulations of the Force. However, his assumption that the Force had created Anakin in defiance of his exploitation makes more logical sense when the "Chosen One" prophecy is applied.