COMPASS/GUIDE

 

The drawback of a compass is that it only gives you direction -- not directions.

It can help you back away from the wrong path and point you toward a better one.

But to navigate that path effectively, you need a guide.

When we are unsure, we seek directions from an expert guide.

It's the familiar mantra: 

If you want to be great, learn from the best.

But the principle has its own limitations.

Students learned less from experts. For the best experts were the worst guides. It is known as the curse of knowledge -- the more you know, the harder it is for you to understand what it's like not to know.

It is explained by cognitive scientist SianBeilock

 "As you get better and better at what you do, your ability to communicate your understanding or to help others learn that skill often gets worse and worse."