The World's Best Book Summaries
Why do we have allergies? Why haven’t humans evolved past them? Why are allergies becoming more common than ever before? The lack of parasites, the decrease in breastfeeding, and the increase in urban pollutants are all factors that lead to allergies. Why we have allergies is unclear but scientists have developed many theories as to why allergies exist. Keep reading to learn more about why we have allergies.
What is the endowment effect? Why do we have a hard time parting with out possessions? The endowment effect states that when you own something, you automatically value it more than other people do. This can lead to poor selling decisions and a tendency to overvalue your possessions. Keep reading for more about the endowment effect.
What does it mean when a character in literature takes flight? What are some examples of flight being used symbolically? More often than not, flight in literature symbolizes either freedom or spirituality. Additionally, the ability to fly can also be used ironically depending on the circumstance. Keep reading to learn about flight in literature.
Why didn’t the Obamas’ marriage start out smoothly? Why did Barack take a second, solo honeymoon just weeks after he married Michelle? Michelle Obama always dreamed about getting married, but Barack, who came from a family with loose ties, didn’t care much about marriage. The two came from very different upbringings and that caused them to clash over their ideals. Keep reading about Michelle Obama’s marriage to Barack
Why hasn’t natural selection, over millions of years, prevented us from getting cancer, heart disease, and depression? Why do our bodies deteriorate with age? How can Darwinian Medicine help us understand diseases better? In the book Why We Get Sick, Randolph Nesse and George Williams explain that “natural selection” means that evolution prioritizes reproductive fitness above all else and that evolution doesn’t bother eliminating diseases that affect us later in life. They also discuss reproductive health and aging as they relate to Darwinian Medicine. Keep reading to learn more about the evolutionary science behind why we get sick.
How do parasites work? Why do they damage their hosts? Wouldn’t it benefit the parasite to keep its host nourished and healthy? The authors of Why We Get Sick explore the science behind how parasites work. They argue that parasites are competitive and that they must fight each other for resources. They also claim that parasites and hosts have reached an equilibrium. Keep reading to learn why parasites don’t help us.
Why is weather so important in literature? Why is rain the most commonly used weather symbol and what does it mean? The setting of a story informs the mood, the attitude of the characters, and the presentation of the themes. One of the most important elements of the setting is the weather. In literature, weather plays many roles such as a plot device, a way to set the atmosphere, a symbol for cleansing or misery, and much more. Keep reading to learn what different types of weather symbolize in literature.
What did Barack Obama’s political career look like before he became president? Why did Barack switch from a legal career to politics? Barack Obama was working full-time at a law firm until an Illinois state senator encouraged him to run for office. This was a difficult career change to make because he and Michelle had two young children and a career in politics would mean big life changes. Keep reading to learn about the beginning of Barack Obama’s political career and the impact it had on his family.
Why hasn’t evolution prevented sickness and disease? How can Darwinian medicine explain why we get sick? The reason we still get sickness and disease despite evolution is that the body must make careful compromises. Sometimes, the thing that causes a disease is or was helpful to us at some point in time. Continue reading to learn why we get sick despite evolutionary advances.
Why do humans share one input for both breathing and eating? Why do we still have an appendix? And why are our retinas inside out? The answer to all these questions is simple: bad evolutionary designs. Over time, evolution makes slow changes to our bodies, but it does not erase the old designs, leaving us with bad or useless traits. Keep reading to learn more about human evolutionary legacies.