When you hear about something new, make sure it is actually new by relating it to what is already known, done, accepted in your field.

It happens quite often, in marketing for example, that a new concept is a mere rebranding of old tactics. This is done, more or less unconsciously, in part to ensure tactics stay relevant, in part to appeal to a new wave of workers, in part to protect the work of marketers (who are by definition creative and innovative).

The basics of marketing have not changed much in the past decades. The best way for you to be in marketing these days is to start from them and build your way to what is new, not the other way around.