Translation of a sentence in Zhu Bian's Old News of Quyi in Song Dynasty

Scholars use allusions, such as those who are well-informed and do not delve into them, and those who follow in the footsteps of their predecessors without discussing where allusions come from. These people are just like the dwarfs watching the drama. Others laugh at them and say that others will definitely not mislead me. There are countless examples of this.