Direct observation of contemporary societies at the threshold of widespread literacy has not assisted our understanding of how such literacy altered ancient Greek society, in particular its political culture. The discovery of what Goody has called the “enabling effects” of literacy in contemporary societies tends to seduce the observer into confusing often rudimentary knowledge of how to read with popular access to important books and documents: this confusion is then projected onto ancient societies. “In ancient Greece,” Goody writes, “alphabetic reading and writing was important for the development of political democracy.”
Can someone explain the bold part? The part "confusing often rudimentary knowledge" sounds grammatically wrong for me, and because of the part I cannot get the meaning of the whole sentence.