Why do people use false analogies?

Is solar power better then coal power? Is milka mixture a solution or both? What does it mean for the relative humidity of an air mass to be 70 percent? How do you use point evidence explanation? What is the superlative form of humid? What is considered a dormant organism? Why do you need to know the convertion especially in temperature? What are the major conclusion that can be drawn from the Hawthorne experiment? Are scissors simple or complex machines? What do you call a scientist who studies bears? What is cumulative pan evaporation? Where use manometer? Is salt translucent or opaque? How did science begin to challenge existing beliefs in the late 1800s? What are the characteristics of a bacterial cell? Which two words have been shortened and joined together to make the word micrograph? What are Thomas Edison's traits? Is it bad to use deodorant if you have a kidney disease? How a mutation may not affect an organisms traits? 1 cm is how many mm?