Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Terrible research blunders

I was given this book as a present by a good friend, who had not read Bruce Alexander's books herself, but had had them highly recommended.Well, I have got to page 31 of Blind Justice (no mystery yet -- and the mystery just might save the book) and have been stalled by horrendous historical blunders. Tuppenny pieces? Please! Tuppence was two pennies -- two coins. It is like someone writing about 2002 and having two-cent coins. Muslin sheets? Oh dear. Muslin was a fine, porous cloth used like cheesecloth today. (He probably meant linen.) And "tallow candle." Oh, very, very dear -- what a shame. Tallow -- sheep fat, was the cheapest lighting fuel available at the time. It was poured into dishes when melted, a wick thrust into it, and it was used by the poor for illumination. Alexander meant spermaceti candles, perhaps ...Well, to please my friend, I will read on. But I hope the plot is a lot better than the historical background.