People in previous eras were not pressured by diverse information, and received knowledge in a summarized and optimized form. And such people had time to reflect on what they were told. Which developed critical thinking and personal knowledge on the subject. Thus the information was internally adapted by the person, and individuality was favored. Reasoning mechanisms, understanding the complex, and allocating knowledge into prerequisite blocks were normal. Which could generate complex analyzes of life and knowledge.
Currently, information is passed on to individuals in large quantities, requiring a lot of memory, but as such things are impossible to record, the memory that is used is short-term memory. Which means that long-term memory is not activated much.
In this way, reflection and rationalization of topics, in addition to the assimilation of complex concepts, are extremely reduced.
As a result, modern society is becoming people with shallow knowledge in everything, and in-depth knowledge in almost nothing, in addition to having a great lack of assimilation in information that requires complex logic.
The tendency is the lack of minds that can develop an evolution in the areas of knowledge, which tend to become more and more complex every day. Whether in production or creating systems.
What we will have in the future if nothing changes is a world population with few people in productive systems, and the vast majority in consumerist systems.