▶ Your Answer :
In this set of issues, both the reading passage and the speaker discuss the origin of the ‘will-o-the-wisp“. To be specific, according to the reading passage, it might be made by a chemical illumination, flying insects, or barn owls. However, the speaker counters these explanations for the following reasons. To begin with, the professor argues that the will-o-the-wisp phenomenon cannot be emerged from a chemical illumination. the professor supports this argument by suggesting an experiment. In the test, induced chemical illumination is cool and green color, but in contrast, will-o-the-wisp is warm and yellow or white color. This result of the study and the professor’s argument cast doubt on the reading passage’s explanation that the phenomenon is a kind of chemical illumination. On top of that, the speaker insists that flying insects like fireflies cannot be also the cause of the phenomenon since they usually spreads across large areas. However, the will-o-the-wisp seems to be a small ball, and does not spread out. Moreover, it is steady without blinking, but fireflies blink in and off. These insistences contradicts the reading passage’s argument that flying insects make the phenomenon. Finally, the lecturer claims that it is not make sense to say that barn owls make the phenomenon. The reason is that they are not entire white. Thus, they cannot be brighter than the phenomenon. In addition, they are usually described as a lasting radiance floating in the air because they does not have consistent light sources. These claims refute the reading passage’s assertion that barn owls are the cause of the will-o-the-wisp phenomenon. In conclusion, the speaker challenges the explanation of the reading passage on account of the reasons stated above, and asserts that the will-o-the-wisp might be related with other factors except a chemical illumination, flying insects, and barn owls. |