The answer is Social knowledge. The combined body of information
created by your public or social circle is what is well-known as social
knowledge. In a social or cultural setting, social knowledge can be the
collective knowledge base of small groups, like a family, or it can be a
massive and constantly evolving body of acquaintance.
Those with schizophrenia might suffer from deficits in long-term memory (the ability to learn and retrieve new information or experiences in one's life) as well as short-term memory (the ability to maintain information over a short period of time).
While the definition of short-term memory is self-explanatory, the definition between parentheses: "the ability to learn and retrieve new information or experiences in one's life" seems to refer to 2 different types of long-term memory.
- "the ability to ... retrieve ... information ... in one's life" refers to semantic memory if it concerns only <u>ideas and concepts which were not created by personal experience</u>. This includes elements of common knowledge that people learn at school, for example.
- "the ability to ... retrieve ... experiences in one's life" refers to episodic memory if we are talking the ability to retain and conjure <u>autobiographical memories</u>. In other words, it has to do with being able to recall places, emotions, and circumstances surrounding events which happened to us. For example, many people have enduring episodic memories of their wedding day.
The communist Manifesto was written by Karl Marx and by Friedrich Engels- Engels is the person you were looking for!
There is some discussion about the role of both authors in writing it, and some people suggest that Karl Marx did most of the work, with Engels having a smaller role.
