Context: Such a theory would be true with higher probability, because it cannot be attacked so easily: to falsify the first one, it is sufficient to find that the sun has stopped rising; to falsify the second one, one additionally needs the assumption that the given day has not yet been reached. Popper held that it is the least likely, or most easily falsifiable, or simplest theory (attributes which he identified as all the same thing) that explains known facts that one should rationally prefer. His opposition to positivism, which held that it is the theory most likely to be true that one should prefer, here becomes very apparent. It is impossible, Popper argues, to ensure a theory to be true; it is more important that its falsity can be detected as easily as possible.

Question: Which type of theory is most falsifiable?
Answer: simplest

Question: What school of philosophy does Popper's thinking on induction oppose?
Answer: positivism

Question: For Popper, knowing that a theory is true is what?
Answer: impossible

Question: What quality of a useful theory must be easily detectable?
Answer: its falsity

Question: Why would a theory be true with lower probability?
Answer: Unanswerable

Question: What did Popper hold that one should do with the most likely theory?
Answer: Unanswerable

Question: Who supported positivism?
Answer: Unanswerable

Question: Who argues it is possible to ensure that a theory is true?
Answer: Unanswerable

Question: What is less important than detecting the falsity of a theory?
Answer: Unanswerable