WHY THE ATM DIDN'T KILL BANK TELLER JOBS, BUT THE IPHONE DID

Summary from the TLDR newsletter

ATMs were predicted to increase bank teller unemployment, but they didn't. However, the number of bank tellers started to fall after the birth of the iPhone. When a technology automates what a human does within an existing paradigm, it rarely gets rid of the human, as the definition of the paradigm creates the need for human involvement. The iPhone created a new paradigm that made the tasks that the ATM substituted irrelevant.