Final answer:
Without additional context, it's not possible to identify who Alex Goldfarb is or determine his impact on Farmer. More specific information about the field or background of the discussion is needed to give an accurate answer.
Step-by-step explanation:
Alex Goldfarb is not a widely recognized historical figure, and without additional context, it's challenging to identify his precise impact on someone named Farmer. It's possible that Alex Goldfarb could be a reference to a specific person in a local context, an author, a scientist, or a public figure that might have had influence on a person or entity named Farmer. However, due to the lack of context and specifics in the question, it isn't possible to provide a decisive answer.
To assist the student further, more information would be needed about the background or field in which Alex Goldfarb and Farmer are being discussed. If this refers to a book, a historical event, or a specific area of study, providing that context would be essential for a detailed and accurate response.