The world is littered with corpses that predicted technology in a particular arena was done. If there's another gigantic step change out there, we don't yet know what it is.
The people who are right a lot often change their minds.
Above all else, align with customers. Win when they win. Win only when they win.
Cultures, for better or worse, are very stable.
Advertising is the price you pay for unremakable thinking.
We've had three big ideas at Amazon that we've stuck with for 18 years, and thy're the reason we're successful: Put the customer first. Invent. And be patient.