It’s enough to know a topic in detail or even solutions to problems, but in order to present it successfully and solve a problem its essential to know the audiences reference points.
This is the same for marketing, sales, politics and education.
There are a bunch of great ideas but without mapping it onto their reference points its like firing in the dark.
You can do that best by talking to them and seeing which topics they bring up and then hanging or connecting your ideas to theirs.
Reading popular or current knowledge I don’t think helps because its hard to know which reference point connected to which point.
The educational psychologist David Ausubel put it bluntly: the most important factor in learning is what the learner already knows. People understand new ideas by attaching them to existing ones. If there’s nothing to attach to, the idea doesn’t stick, however good it is. This is also why experts are often poor explainers: the “curse of knowledge” makes it hard to remember what it’s like not to know something, so they skip the bridges a newcomer needs.