What is the difference between global knowledge and personal ideas

Global is like most people and personal is a specific individual ideas

I believe that Global knowledge is the people in the world or a certain place in the world. And personal ideas is your own interpretation or an idea.

Hope this helps. Not sure if this is true, but I hope this helps in any way.

The first funny/ironic fact about the finch family's history that we learn in chapter 13 is that the finch family married within their own family for many generations.  another interesting fact that we (the readers) learn is that the finches' cousin joshua attempted to shoot the president, and went to prison for many years.  these examples are just two of many that imply the finch children are, perhaps, not from the finest family lineage.