Students at the Federal Polytechnic Institute in Zurich wrote to Carl Jung in 1949 to ask what effect he thought technology had on the human psyche. “The danger lies not in technology,” Jung responded, “but in the possibilities awaiting discovery.” The question regarding new discoveries was “whether man is sufficiently equipped with reason to be able to resist the temptation to use them for destructive purposes.” This, Jung concluded, “experience alone can answer.”

Thirteenth-century professor Thaddeus of Bologna once claimed anyone who ate eggplant for nine days would go insane. A student decided to test the theory and after nine days returned to report he was not mad. Thaddeus asked him to turn around; on observing the student’s behind he announced, “All this about the eggplant has been proved.” It is said the student subsequently wrote a learned treatise on the subject.

“A peaceable person,” wrote Brazilian novelist Jorge Amado in The Discovery of America by the Turks, intended for publication in 1992 for the five-hundredth anniversary of 1492, “can’t take the smallest step or blow the slightest fart without the fifth centenary landing on his head.”

A 52-million-year-old fossilized tomatillo found in January 2017 revealed the fruit to be five times older than scientists had previously thought. “The initial discovery was a very big OMG moment,” said paleobotanist Peter Wilf. “I was like, ‘Wait a minute, wait a minute, wait a minute. Could it be? Could it be? Could it be? Really? Really? Really?’ Then I just went nuts.”