The author expresses their uncertainty by comparing the revolutionary changes brought by the Gutenberg printing press to the potential impacts of the iPhone. The assertion is that while the iPhone has influenced many aspects of life, similar to the printing press, it hasn't yet led to a single magnificent idea or widely opened minds for democracy and religion as the printing press did. The author questions whether the iPhone can lead to significant societal changes as the printing press had.
The specific indication of uncertainty by the author is reflected in their mention of the hope that the iPhone, and the Internet in general, would liberate people in closed societies. However, the mentioned continued suppression of ideas in countries like North Korea, China, and Iran challenges that hope, leading to the conclusion that the correct answer is "The continued suppression of free speech in closed societies."
The author attributes the French and American revolutions to the invention of the printing press due to its role in the rapid spread of information. The printing press allowed for the dissemination of new ideas concerning freedom and democracy, which were crucial in inspiring revolutionary thoughts and actions.
The comprehension passage highlights the impact the printing press had on society, comparing it to the effect of the iPhone in modern times. The press significantly increased the production of written material, enabling more people to access information and ideas that were previously confined by the limited production capabilities of handwritten books.
Furthermore, the text suggests that the presence of "enlightened voices in print" was instrumental in the intellectual environment necessary for the revolutions, as it broke the monopoly on knowledge once held by religious clerics and made revolutionary ideas available to a broader audience. This aligns with the chosen answer because it emphasizes the fundamental role of information dissemination in fostering the revolutionary movements in France and America.
Thus, the correct reason why the author attributes the revolutions to the printing press is, "the rapid spread of information exposed people to new ideas on freedom and democracy."
The passage contrasts the impact of the smartphone, specifically the iPhone, with that of the Gutenberg printing press. The author explores how each technology influenced society and whether the smartphone can match the historical significance of the printing press.
Key Points from the Passage:
Conclusion Based on the Passage:
The smartphone, symbolized by the iPhone, has "so far not proved as successful as the printing press in opening people's minds." This conclusion aligns with the author's exploration of the smartphone's impact compared to the profound societal changes initiated by the printing press.


When people who are talking don’t share the same culture, knowledge, values, and assumptions, mutual understanding can be especially difficult. Such understanding is possible through the negotiation of meaning. To negotiate meaning with someone, you have to become aware of and respect both the differences in your backgrounds and when these differences are important. You need enough diversity of cultural and personal experience to be aware that divergent world views exist and what they might be like. You also need the flexibility in world view, and a generous tolerance for mistakes, as well as a talent for finding the right metaphor to communicate the relevant parts of unshared experiences or to highlight the shared experiences while demphasizing the others. Metaphorical imagination is a crucial skill in creating rapport and in communicating the nature of unshared experience. This skill consists, in large measure, of the ability to bend your world view and adjust the way you categorize your experiences. Problems of mutual understanding are not exotic; they arise in all extended conversations where understanding is important.
When it really counts, meaning is almost never communicated according to the CONDUIT metaphor, that is, where one person transmits a fixed, clear proposition to another by means of expressions in a common language, where both parties have all the relevant common knowledge, assumptions, values, etc. When the chips are down, meaning is negotiated: you slowly figure out what you have in common, what it is safe to talk about, how you can communicate unshared experience or create a shared vision. With enough flexibility in bending your world view and with luck and charity, you may achieve some mutual understanding.
Communication theories based on the CONDUIT metaphor turn from the pathetic to the evil when they are applied indiscriminately on a large scale, say, in government surveillance or computerized files. There, what is most crucial for real understanding is almost never included, and it is assumed that the words in the file have meaning in themselves—disembodied, objective, understandable meaning. When a society lives by the CONDUITmetaphor on a large scale, misunderstanding, persecution, and much worse are the likely products.
Later, I realized that reviewing the history of nuclear physics served another purpose as well: It gave the lie to the naive belief that the physicists could have come together when nuclear fission was discovered (in Nazi Germany!) and agreed to keep the discovery a secret, thereby sparing humanity such a burden. No. Given the development of nuclear physics up to 1938, development that physicists throughout the world pursued in all innocence of any intention of finding the engine of a new weapon of mass destruction—only one of them, the remarkable Hungarian physicist Leo Szilard, took that possibility seriously—the discovery of nuclear fission was inevitable. To stop it, you would have had to stop physics. If German scientists hadn’t made the discovery when they did, French, American, Russian, Italian, or Danish scientists would have done so, almost certainly within days or weeks. They were all working at the same cutting edge, trying to understand the strange results of a simple experiment bombarding uranium with neutrons. Here was no Faustian bargain, as movie directors and other naifs still find it intellectually challenging to imagine. Here was no evil machinery that the noble scientists might hide from the problems and the generals. To the contrary, there was a high insight into how the world works, an energetic reaction, older than the earth, that science had finally devised the instruments and arrangements to coart forth. “Make it seem inevitable,” Louis Pasteur used to advise his students when they prepared to write up their discoveries. But it was. To wish that it might have been ignored or suppressed is barbarous. “Knowledge,” Niels Bohr once noted, “is itself the basis for civilization.” You cannot have the one without the other; the one depends upon the other. Nor can you have only benevolent knowledge; the scientific method doesn’t filter for benevolence. Knowledge has consequences, not always intended, not always comfortable, but always welcome. The earth revolves around the sun, not the sun around the earth. “It is a profound and necessary truth,” Robert Oppenheimer would say, “that the deep things in science are not found because they are useful; they are found because it was possible to find them.”
...Bohr proposed once that the goal of science is not universal truth. Rather, he argued, the modest but relentless goal of science is “the gradual removal of prejudices.” The discovery that the earth revolves around the sun has gradually removed the prejudice that the earth is the center of the universe. The discovery of microbes is gradually removing the prejudice that disease is a punishment from God. The discovery of evolution is gradually removing the prejudice that Homo sapiens is a separate and special creation.
For any natural number $k$, let $a_k = 3^k$. The smallest natural number $m$ for which \[ (a_1)^1 \times (a_2)^2 \times \dots \times (a_{20})^{20} \;<\; a_{21} \times a_{22} \times \dots \times a_{20+m} \] is: