This one wasn‘t for me. Could tell it was well researched. Some authors can put together a good narrative with relatively little information. Others have to insert “it‘s believed” or “experts think” or “it‘s unknown” into the mix. That, for me, halts the narrative too much so it‘s start-stop-start-stop and there was enough of that here to be distracting. Appreciate the effort to tell the story, but the method didn‘t work well for me.