Instruct: Classify Amazon reviews into positive or negative sentiment
Query: And yet another Pictish theory enters the ring

Terrific new entry into the nebulous world of Pictish studies. Without a challenge, it has the BEST chronology of Pictish events and clearly the most clearly researched list of Pictish kings (which can be confusing at times in most books).The author's theory as to the Britannic origin of the Scottish peoples in relation to the Picts is interesting and highly provocative.Brilliant new entry into this debated bit of ancient Britannic history!