Alexander Graham Bell (1847-1922) invented the telephone while he was trying to create a machine to help deaf people ! ( His mother and his wife were both deaf and he was a teacher for deaf people). He had an assistant called Mr Watson ( !). And one day, on March 10th 1876, as they were working on his new machine, he pronounced his famous sentence : ’ Mr Watson, come here, I want to see you ’. Mr Watson who was in another room clearly heard the words.
The telephone was born !