This new invention of printing has produced various effects of which Your Holiness caimot be ignorant. If it has restored books and learning, it has also been the occasion of those sects and schisms which daily appear. Men begin to call in question the present faith and tenets of the Church; the laity read the scriptures and pray in their vulgar tongue. Were this suffered the common people might come to believe that there was not so much use of the clergy. If men were persuaded that they could make their own way to God, and in their ordinary language as well as Latin, the authority of the Mass would fall, which would be prejudicious to our ecclesiastical orders. The mysteries of religion must be kept in the hands of the priests.

[Cardinal] Thomas Wolsey.

As was the case during the early days of the World Wide Web, however, the quality of the information was highly varied. While the printing press paid almost immediate dividends in the production of higher quality maps,10 the bestseller list soon came to be dominated by heretical religious texts and pseudoscientific ones.11 Errors could now be mass-produced, like in the so-called Wicked Bible, which committed the most unfortunate typo in history to the page: thou shalt commit adultery.12 Meanwhile, exposure to so many new ideas was producing mass confusion. The amount of information was increasing much more rapidly than our understanding of what to do with it, or our ability to differentiate the useful information from the mistruths.13 Paradoxically, the result of having so much more shared knowledge was increasing isolation along national and religious lines. The instinctual shortcut that we take when we have “too much information” is to engage with it selectively, picking out the parts we like and ignoring the remainder, making allies with those who have made the same choices and enemies of the rest.

The glut of books produced a situation of "too much information" similar to the one produced by the world wide web.