The Book of Mormon

There are eight times as many words in the book of mormon as there would have been characters on the gold plates, right? Like weymore english words than actual egyptian characters. Theres not like a one to one character per letter, or even character per word. A character in reformed egyptian would likely represent sentences, if not paragraphs. So why would martin harris go back and keep working for joseph smith if anthon had told him it was? It was ridiculousi, i just find it hard to bring those two together.