According to Gregory Mankiw, a US teacher and economist, this example would demonstrate the economic principle of "the significance of opportunity cost in decision making". Martina had to give up going to restaurants in order to continue travelling by taxi. She probably compared the cost and benefits of packing lunch vs going to a restaurant before taking the final decision.
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Explanation:
Africans tell tales in which smaller animals outsmarted larger ones to give a strong point. .The smaller animals have the brains, and because of using logic and trickery, they outsmart the bigger animals. Africans tell these tails because sometimes, people are disadvantaged by others.
Galileo used his telescope to prove that Copernicus's theory was right, that indeed the sun was in the center of the solar system rather than the earth from Ptolemy's geocentric theory.
Galileo found Jupiter's moons and Saturn's rings and supported the argument that the earth, therefore, was not at the center or else everything would be center on earth.
