The advice "I don't know" sounds good, but without further qualification it just sounds good. Examples are my boss and their boss, who instead of saying "I don

The advice "I don't know" sounds good, but without further qualification it just sounds good. Examples are my boss and their boss, who instead of saying "I don't know," would sell you their plan for nuclear fusion despite knowing fusion only in the context of fine dining. Many politicians are also allergic to "I don't know," but they continue to get elected, many journalists have no clue but continue to write for major newspapers. They don't say "I don't know," they write while not knowing, but without mentioning it.