Interesting article. The thing about science is that it relies on creativity which is a messy and poorly understood process. While outsiders and newcomers can produce breakthroughs they can also produce massive misunderstandings because they don't know the basic subject well enough. As the article says, it usually takes the expert insider to recognise that an outsider's question or idea could well be right. And the most creative scientists usually use metaphor or analogy to describe or examine their ideas. Famously, Einstein discovered relativity by imagining what it would be like to ride on a particle of light.