How do you know that the children understood what was causing the disagreement between their fathers in the story "sunday in the park" by bel kaufman

You receive an email from an impressive-sounding stranger, professor alexander rothschild renard iii, president of the american institute for scientific political statesmen. he urges you to vote for his presidential candidate choice. this social media red flag is known as pomposity inanity superstition fanaticism

What is the italicized part in the sentence , all of the operators are efficient.

Which sentence in this excerpt from "in another country " by ernest hemingway is an example of irony?