1·Obviously I have my own somewhat unsubstantiated ideas, but would love to get some insight from those with more practical knowledge than myself.
显然我有自己的一些未经证实的想法，但想获得一些见解从那些比自己更实用知识。
2·It is often used casually to refer to unsubstantiated personal opinions, in contrast to knowledge and fact-based beliefs.
通常随意引用未经证实的个人观点，与知识和基于事实的信念相比较。