Ali pa ta: “You do not really understand something unless you can explain it to your grandmother.”, ki ga seveda lepo demonstrira s tem: “You see, wire telegraph is a kind of a very, very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? And radio operates exactly the same way: you send signals here, they receive them there. The only difference is that there is no cat.”