The map gives clear directions and instructions that we simply need to follow religiously. If we follow exactly what the map says, the only way we will go wrong is if the map is wrong itself. 

However, a compass simply helps us determine the direction. It tells us whether we are moving in the right direction. It tells us nothing of the path to take or what we'll face along the way. It doesn't tell us how to overcome roadblocks that prevent us from taking a straight path in the right direction. 

If you're walking down a well trodden path and intend to do exactly as others before you have done, then a map is your best tool. 

But if you're looking to create something new, or are looking to figure things out along the way and learn for yourself, then a compass is your best tool. 

They both help us get where we want to go. But we need to choose wisely which one we want to use.