Learn English – What does “in direct line of descent from..” mean

meaning

Berkeley's argument is in direct line of descent from Parmenides. (The Presocratic Philosophers, by Jonathan Barnes)

J. Barnes was interpreting what Parmenides means by "to think is the same as to be". Then he resorts to Berkeley to make the discussion easier to understand.
Does Barnes mean that Berkeley has inherited Parmenides's idea, and there is a historical connection between them? If so, it will be an unnecessary statement,because it will attract too much attention, and need to be defended, so that the attempt to make things easier will be in vain.
Or, it just means that their thoughts are very close to each other, very similar, without any claim to historical connection?

Best Answer

"Direct line of descent" usually means that you are in the direct family tree of another person. A son and grandson would be in a direct line of descent from the grandfather.

However sometimes the term is used for the passing of ideas or practitioners in a field. I often hear a similar thing being said when discussing both NFL coaching trees and coaching ideology.


Examples:

Mike Holmgren is in direct line of descent from Bill Walsh. (Mike Holmgren coached under Bill Walsh and then went on to coach in the NFL)

Cam Cameron's style is in direct line of descent from Bill Walsh. (Cam Cameron never coached under Bill Walsh but started using his offensive philosophies later in his career)


If you notice I had to add the word "style" as a qualifier. As the author had to add "argument" as a qualifier to yours. So I would imply that it means that Berkeley's argument aligns with Parmenides and that Berkeley is continuing the discussion.