Both the reading passage and the lecturer discuss whether digital libraries are beneficial or not. The lecturer argues that digital libraries have a number of drawbacks. This contradicts the writing's claim that digital libraries have several distinct advantages.
First, the lecturer argues that people need computers to access digital libraries. This causes inconvenience to people who can not afford computers. When a large number of world population can not afford computers, digital libraries will only benefit a narrow group of people. This casts doubt on the writer's assertion that people can access digital libraries regardless of their locations.
Second, the lecturer contends that there are too much information in digital libraries. This means that it takes a lot of time to find credible and reliable information. It is because anybody can upload information without going through a strict editorial process. This counters the reading passage's claim that digital libraries are time-saving because people do not have to search through printed books.
Last, the lecturer points out that digital libraries cause issues with the infringement of intellectual property. People tend to think online information is free and this discourages writers from publishing books online. This refutes the writer's assertion that digital libraries make intellectual world more vigorous because writers can easily reach more readers.