The reading passage contends that online classes positively affect on students. On the other hand, the lecture brings up several points that contradict this argument.
First of all, the speaker point out that online course is not beneficial because it makes learners be lazy. On the other hand, since online course has no constraints, it has too much freedom to students take the class seriously. In addition, students cannot be tested objectively. In fact, taking exam is impossible on computer. This is because you can't prevent their cheating. This cast doubt on the reading which states online course helps students to study conveniently without any concern of time and distance.
Secondly, according to the lecture, it is hard to discuss if you take online course. On significant reason is that you can't assure that professor is always available to answer. Moreover, the professor doesn't feel to typing the same thing repeatedly. This leads to late responds and students frustrate and procrastinate to question. This rebuffs the reading passage's assertion that professor can answer to each student and since they are not limited they can discuss and share ideas well.