>You only need to be slightly more intelligent than the people trying to track you in order to not get caught. I heard and read enough true crime stories to noticed that successful serial killers and incompetent law enforcement tend to go hand-in-hand.

There is a caveat to this. As the perpetrator of a crime (what and how stuff is defined as a "crime" is a different discussion), no matter how smart you (think) you are, you have to get it right every single time, in perpetuity

For law "enforcement", they only need to get it right once.