The online dictionary’s definition of Authentic is:
Having an origin supported by unquestionable evidence; authenticated; verified. (http://www.dictionary.com/browse/authentic) Accessed on: 31/10/17. Personally, I feel that something can be authentic for only a short period. For example, scientist find out cures for diseases and that is evidence but new forms begin and we are stuck in a loop. Authentic is used too loosely these days as any small piece of evidence can be called authentic taking away the true meaning of the origin even though the definition states that as long as its supported then its seen as authentic.
The online oxford dictionary states that authentic means:
Of undisputed origin and not a copy; genuine. (https://en.oxforddictionaries.com/definition/authentic)
Accessed on: 31/10/17
This definition is slightly different to the precious one as this one states that it should not be a copy and that it should be genuine. However, it doesn’t state if there needs to be evidence and that’s why so many things become authentic just by people saying it and discovering originals.
From this research, to some extent I agree that things can be truly authentic as they have suitable evidence that supports their origin. Such as paintings there are a certain amount that are original and genuine however, the ones that have been modified and modernised that are called authentic i disagree with as they are simply pastiches. Modernism has a big impact on this topic as It has changed the way many people view authenticity moreover; the modern arts are creating their own authenticity as they develop.