sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: What are some interesting pathological functions?
 sentence 2: Which is better for job IT industry or lectureship? sentence 1: What's mean it?
 sentence 2: What does "it is what it is" mean? sentence 1: Why CNN is so boring?
 sentence 2: Why do I crave excitement and danger? My life is not necessarily boring but I want more.
not same meaning
not same meaning
not same meaning
not same meaning