How does Marlowe's Doctor Faustus illustrate the fusion of medieval and Renaissance elements?.

Written near the close of the sixteenth century,
Christopher Marlowe's Doctor Faustus reflects the transition from
the Middle Ages to the Renaissance characteristic of this period in Northern Europe. 
While writers such as Copernicus and Harvey were proposing new views of the universe and
the human body respectively, other writers of the same period clung quite tenaciously to
medieval perspectives.  Tycho Brahe, a Danish astronomer at the close of the sixteenth
century, actually adhered to a geocentric view of the cosmos in spite of the general
trend to the contrary.

In Doctor
Faustus, these conflicting views surface in the title character himself.  At
the opening of the play, Doctor Faustus studies an array of subjects most of his time
considered the sources of wisdom.  From theology, to medicine, to astronomy, to law,
Doctor Faustus examines the current state of knowledge and finds it lacking.  He
ultimately determines that an older, medieval, "science" can provide the answers he
seeks.  Magic, particularly the magic that would allow him to manipulate the world and
those around him for his own gain, proves the most enticing for him.  Unlike science
which governs much of Renaissance thought, and religion which dominated the Middle Ages,
magic rides the fence between them.  Rather than relying on empiricism as science does,
or a passive approach such as revelation characteristic of religion, magic incorporates
elements of both.  The "magician" must actively involve himself in the process of
conjuring, but he must also look/appeal to a power greater than his to accomplish his
goal.  The choice of magic perfectly represents the fusion of medieval and Renaissance
elements, because it incorporates aspects of both.