It's painfully obvious to an objective observer that the Book of Mormon was made up by someone who knew almost nothing about the time and place in which he was setting his story, and therefore made numerous elementary mistakes. Smith could have avoided some of the most egregious just by doing a little background reading first but didn't even bother to do that, indicating a degree of contempt for those he was scamming which sadly proved to be justified. Not only were the people of his time taken in by his clumsy fake (which is perhaps excusable given the limitations of their educations and access to historical information) but some are still falling for it now, despite that information - and additional evidence like the DNA analysis of native Americans - being readily available to almost everyone.
I agree with the first and last part, but I'm not so sure about the middle part. Considering he was a relatively young man in a poor family, at a time when books on obscure topics cost close to the daily pay of a laborer and large free lending libraries weren't in every small city, I don't think that more information was readily accessible. It was more of a case of the blind leading the blind.
It's not like he could just google to find a range of scholarly inquiry on the topic, so if he did come across a few random books, they might even be things like this:
A Star in the West, or A Humble Attempt to Discover the Long Lost Ten Tribes of Israel
Yes, he
might have looked up more information on the early Americas, because the lack of horses, for example, was long known. For example (1746):
http://books.google.com/books?id=6rI-AAAAcAAJ&pg=PA284&output=html
It has been observed already, that there were not to be found either in Peru, or any other part of America, when the Spaniards arrived there, any Horses, Cows, Elephants, Camels, Asses, Mules, Sheep, or Hogs.
But his premise was an alternate history in which people from the Middle East settled in the Americas several hundred years before the birth of Christ. The common meme was that such societies no longer exactly resembled Israelites because they had changed over time, so even
had he known (or if he did), I'm not sure it would contradict the meme to have the tribes more closely resemble the Middle East at the start and then degenerate to what the Spaniards found.
For example, from the 1819 Literary Gazette, London, speaking of indigenous people in Brazil:
http://books.google.com/books?id=u18p4WbHivYC&pg=PA728&output=html
Early writers, fond of theory, and looking every where for the lost tribes of Israel, suppose these people to be of Jewish origin, because names were found among them resembling David and Solomon; because it was their custom, that a survivor should raise up seed to his deceased brother, and because their garments, which were long enough to reach the ground, were gathered up with a girdle... Other vestiges of a civilization from which they had degraded, were found among them. They had little idols wrought in copper...
Apparently speaking about battle with the Spaniards (era not specified) the author writes on the same page: "the arrows were headed with wood, or bone, or
iron..."
A person reading that article and using it to write speculative fiction that filled in the gaps would, I think, feel justified in imagining an early civilization more like a Biblical one, before it degraded to what the Spaniards found, and not consider that some things were hard-and-fast anachronisms.
That's the kind of popular thought running around at the time.
I don't know if anyone has studied what books, exactly, Smith and the people in his community had access to, or what reviews and newspaper articles on the subject, but I'd be surprised if someone hasn't tried.
I'm just not getting vibes that Smith felt contempt for his "victims." Yes, he felt superior to them in the sense that he clearly loved the ego boost of being able to speak for God and have people believe him. But like I mentioned in a previous post contrasting him to P. T. Barnum, he didn't seem to have an out-of-character side where he made fun of the rubes, justified fooling them because they enjoyed it, and spoke as himself. He was as much part of the game as he was the one running it.