Were Gospel biographies fictitious?

Once a professor told me that ancient biographies, including the Gospels, were fictitious. Can you always believe everything your professor tells you? (Maybe some professors more than others …) Find out more on this 1-minute clip:

This is excerpted from a course on Matthew available for free at: http://faculty.gordon.edu/hu/bi/ted_hildebrandt/DigitalCourses/00_DigitalBiblicalStudiesCourses.html#Matthew_Keener

The most important lesson Craig Keener learned from Acts–1 minute

1 minute: my most important lesson from Acts: praying for the coming of the Spirit. 1-minute lecture by Acts scholar Craig Keener. (See Luke 11:13; Acts 1:14; 4:31.)

For 23 free lectures on Acts, see http://faculty.gordon.edu/hu/bi/ted_hildebrandt/DigitalCourses/00_DigitalBiblicalStudiesCourses.html#Acts_Keener