The abc conjecture is as hard as the xyz conjecture
The story goes as follows. My grandson seeing me often absorbed and studying in my office, asked: "Papa Paulo, what are you always studying?" As he is a smart seven year old boy, I tried to impress him: "I am working on the abc conjecture."
Hearing abc he said right away: "This is easy" and recited, singing the well-known tune "abc..defg...hijk...lmnop..." As a result, he lost all respect for me. I would be the greatest grandpa, if I had said "The xyz conjecture"...
Paulo Ribenboim, 19 August, 2002