In general, people (especially young adults) do not want to look stupid. So if they do not know the answer they start talking / writing about the shit they know

In general, people (especially young adults) do not want to look stupid. So if they do not know the answer they start talking / writing about the shit they know. But senior engineers and wiser people will answer with: I do now know. Or simple “yes” or “no”. Or answer with clear question or two if the initial question is not clear.