OE
1. According to the passage, which of the following does not meet the criteria for falsifiability?
A “falsifiable idea” is “one that can be shown to be false.” The statement in choice (E), “no human being lives forever,” can only be shown to be false if one observes a human being that lives forever. However, this would be impossible (because of the word “forever”), and thus the idea is not falsifiable.
In addition, answer choices (A) through (D) are incorrect. The statement “All birds are black” is falsifiable by identifying a single bird that is not black.
The statement “Earth is the only planet in the universe with intelligent life” can be proven false by finding intelligent life on any planet in the universe except Earth. The statement “It rains on Mars every day” can be proven false by observing Mars on a single non-rainy day. The statement “The sun will explode in 100,000 years” can be proven false by waiting more than 100,000 years and verifying that the sun has not exploded. Note that choices (D) and (E) seem somewhat similar—however impractical it is to wait 100,000 years to falsify something, there is still a big difference between “100,000 years” and “forever.”
Answer: E