When a person (or team or firm or government) decides how to act in dealings with other people (or teams or firms or governments), there must be some cross-effect of their actions; what one does must affect the outcome for the other. For the interaction to become a strategic game, however, we need the participants’ mutual awareness of this cross-effect. What the other person does affects you; if you know this, you can react to his actions, or take advance actions to forestall the bad effects his future actions may have on you and to facilitate any good effects, or even take advance actions so as to alter his future reactions toyour advantage. If you know that the other person knows that what you do affects him, you know that he will be taking similar actions. And so on. It is this mutual awareness of the cross-effects of actions and the actions taken as a result of this awareness that constitute the most interesting aspects of strategy.


When each participant is significant in the interaction, either because each is a large player to start with or because commitments or private information narrow the scope of the relationship to a point where each is an important player within the relationship, we must think of the interaction as a strategic game. Such situations are the rule rather than the exception in business, in politics, and even in social interactions. Therefore, the study of strategic games forms an important part of all fields that analyze these matters.


Avinash Dixit et al. Games of strategy.

New York: W.W. Norton & Coadapted, 2015 (adapted).

Considering to the preceding text, judge the item that follow.

The words “forestall” and “facilitate” (third sentence of the text) work as antonyms and are being used to convey opposite reactions.

Businesses are starting to introduce new options for tipping at self-checkout machines, putting even more pressure on customers amid rising inflation costs. Despite having zero interaction with employees during transactions, self-checkout machines at places such as coffee shops, bakeries, airports, and sports stadiums are giving customers the option to leave the typical 20% tip, according to a report from the Wall Street Journal.


Business owners believe that the prompt for a tip can boost staff pay and increase gratuities — but customers are questioning where and to whom the extra cash is going, considering self-checkout is done by the customers themselves. “They’re cutting labor costs by doing self-checkout. So what’s the point of asking for a tip? And where is it going?” are some of the questions customers ask. But tipping researchers claim this is a way for companies to put the responsibility of paying employees on the customer rather than increasing employee salaries themselves. Self-tipping is viewed by many customers as a way to guilt-trip the person into tipping on something when they typically wouldn’t.


Many companies told the Journal that these tipping prompts are optional, and the extra gratuity is split between all employees. However, experts say that tips at a self-checkout machine might never even get to an actual employee since protections for tipped workers in the federal Fair Labor Standards Act don’t extend to machines.


Internet: <https://nypost.com> (adapted).


According to the previous text, judge the following item.

Tipping at self-checkout machines have become mandatory in most places like coffee shops, bakeries, airports, and sports stadiums.

Four types of English exist in Africa, identifiable in terms of history, functions, and linguistic characteristics. West African Pidgin English has a history going back to the 15th century, 400 years before formal colonization. Creole varieties of English have a history going back to repatriation of enslaved people from the Caribbean and the United States of America in the 19th century. Second language varieties, which are the most widespread on the continent, are prototypically associated with British colonization and its education systems. L1 (first language) English occurred mostly in Southern and East Africa and is best represented in South Africa. The latter shows significant similarities with the other major Southern Hemisphere varieties of English, spoken in Australia and New Zealand.


African Englishes From a Sociolinguistic Perspective.

Internet: <oxfordre.com> (adapted).

Considering the previous text, its ideas and linguistic features, as well as the reading strategies that apply to it, judge the following item.

The phrase “the most widespread”, in the fourth sentence of the text, is a superlative construction, with “most” modifying the adjective “widespread”.

Businesses are starting to introduce new options for tipping at self-checkout machines, putting even more pressure on customers amid rising inflation costs. Despite having zero interaction with employees during transactions, self-checkout machines at places such as coffee shops, bakeries, airports, and sports stadiums are giving customers the option to leave the typical 20% tip, according to a report from the Wall Street Journal.
Business owners believe that the prompt for a tip can boost staff pay and increase gratuities — but customers are questioning where and to whom the extra cash is going, considering self-checkout is done by the customers themselves. “They’re cutting labor costs by doing self-checkout. So what’s the point of asking for a tip? And where is it going?” are some of the questions customers ask. But tipping researchers claim this is a way for companies to put the responsibility of paying employees on the customer rather than increasing employee salaries themselves. Self-tipping is viewed by many customers as a way to guilt-trip the person into tipping on something when they typically wouldn’t.
Many companies told the Journal that these tipping prompts are optional, and the extra gratuity is split between all employees. However, experts say that tips at a self-checkout machine might never even get to an actual employee since protections for tipped workers in the federal Fair Labor Standards Act don’t extend to machines.

Internet: <https://nypost.com> (adapted).

According to the previous text, judge the following item.

It can be inferred from the text that tipping reseachers and some customers suspect that the tips given through self-checkout machines will never reach the employees.

Text I


Despite the tricky and life-threatening relationship between Paleolithic humans and the megafauna that comprised so much of their environment, twentieth-century scholars tended to claim cave art as evidence of an unalloyed triumph for our species. It was a “great spiritual symbol,” of a time when “man had just emerged from a purely zoological existence, when instead of being dominated by animals, he began to dominate them.” But the child-like and highly stylized stick figures found in caves do not radiate triumph. By the standards of our own time, they are excessively self-effacing and, compared to the animals portrayed around them, pathetically weak.

While twentieth-century archeologists tended to solemnize prehistoric art as “magico-religious” or “shamanic,” today’s more secular viewers sometimes detect a vein of sheer silliness. India’s Mesolithic rock art portrays few human stick figures; those that are portrayed have been described by modern viewers as “comical,” “animalized” and “grotesque.” As Judith Thurman wrote about the artists, “despite their penchant for naturalism, rarely did they choose to depict human beings, and then did so with a crudeness that smacks of mockery.”

But who are they mocking, other than themselves and, by extension, their distant descendants, ourselves? Of course, our reactions to Paleolithic art may bear no connection to the intentions or feelings of the artists. Yet there are reasons to believe that Paleolithic people had a sense of humor not all that dissimilar from our own.


Barbara Ehrenreich. The Humanoid Stain. Later on. Internet: (adapted).

Judge whether the following items about text I are right (C) or wrong (E).

In the expressions “unalloyed triumph” (first sentence of the text) and “sheer silliness” (first sentence of the second paragraph), the adjectives “unalloyed” and “sheer” convey similar meanings.