Serendipity vs. Prepared Mind

Serendipity
1) The faculty of making fortunate discoveries by accident.
2) The fact or occurrence of such discoveries.
3) An instance of making such a discovery.
Word History: We are indebted to the English author Horace Walpole for the word serendipity, which he coined in one of the 3,000 or more letters on which his literary reputation primarily rests. In a letter of January 28, 1754, Walpole says that "this discovery, indeed, is almost of that kind which I call Serendipity, a very expressive word." Walpole formed the word on an old name for Sri Lanka, Serendip. He explained that this name was part of the title of "a silly fairy tale, called The Three Princes of Serendip: as their highnesses traveled, they were always making discoveries, by accidents and sagacity, of things which they were not in quest of...."

Serendipity is an effect by which one accidentally makes a discovery - while looking for something else.

Or, is it’s a chance discovery by the prepared mind?

Prepared Mind
"In the field of observation, chance only favours the prepared mind". (Louis Pasteur, 1854)

Or, is chance nothing more than serendipity that anybody can stumble upon?

Serendipity vs. Prepared Mind
To what degree is creativity or innovation attributed to or created by serendipity? And to what degree is it attributed to or created by the prepared mind?

(to be concluded)