I guess when you feel something in your gut , you can take advantage with it because it is something at your core communicating with you. Like if you feel like you should take the job opportunity you may be more inclined to do better there because it aligns with something within your soul and just feels right. Even though it may not be the most rational decision at the moment you can make it work to your advantage and just go for it.

On the other hand going by your gut when there is nothing to back it up , say ,when you really think someone stole something but aren't really sure might not be the best idea. I have one accused someone of stealing something from me at a party just because I had a gut feeling he did but when I went back home and looked it had just fallen from the top shelf and was on the floor under some clothes.