The phrase "already existing knowledge" is correct and usable in written English.
It can be used when referring to knowledge that has been established or recognized prior to a certain point in time.
Example: "In this study, we will build upon the already existing knowledge in the field of cognitive psychology."
Alternatives: "pre-existing knowledge" or "established knowledge."
How can new knowledge be created from already existing knowledge?
We based the model building on already existing knowledge of the habitat preferences of the species and built four alternative predictive models with logistic regression.
The reciprocal integration of diverse research methods has led to the creation of new disciplines formed on the basis of the already existing knowledge domains.
Mitchell (2006) suggests that creating and applying new knowledge or revealing and reconfiguring already existing knowledge results in new products or services which in turn culminate in innovation success.
Some described that facilitation only stimulated MNHGs to communicate messages to the public based on group members' already existing knowledge.
Our work extends the already existing knowledge and produces a comprehensive list of the members of the DevR regulon.
Snowballing, or reference and citation tracking, was used to find articles based on literature already familiar to the authors through existing knowledge, previous research, and personal contacts (Greenhalgh and Peacock 2005; Wohlin 2014).
However, we suggest that informatics technologies can be used to leverage existing knowledge that has already been collected to make new discoveries and guide further experimentation.
In Allison (2002) for examples, prospective graduate degree applicants are advised to justify their proposed research by referring to existing knowledge, belief, or practice, including relevant research that already exists on the topic (222).
Each new word, sentence and paragraph is added in your existing knowledge bank, which is already loaded with diverse links and relationships.
Significant effort has already been dedicated to the formal representation of existing knowledge of the molecular machinery of the cell.
