The perceived wisdom is that people do not go in large numbers to black-and-white movies anymore - which is a great shame, but I'd love to make a black-and-white movie one day. ↗
Al Qaeda has come back. Al Qaeda is a resilient organization. But they're not here in large numbers. But al Qaeda doesn't have to be anywhere in large numbers. ↗
My list of basic tools is a partial answer to the question about what has changed: Over the past few years, large numbers of programmers have come to depend on elaborate tools to interface code with systems facilities. ↗