Actually it would be called historical reconstruction. If your not interested do bother commenting and continue in your post-modern world where all things that exist, outside of personal lived experience, are simply constructs.
Bart Ehrman (a secular agnostic):
This is not even an issue for scholars of antiquity.... The reason for
thinking Jesus existed is because he is abundantly attested in early
sources.... If you want to go where the evidence goes, I think that
atheists have done themselves a disservice by jumping on the bandwagon
of mythicism, because frankly, it makes you look foolish to the outside
world. If that’s what you’re going to believe, you just look foolish.
Michael Grant:
we can no more reject Jesus' existence than we can reject the existence
of a mass of pagan personages whose reality as historical figures is
never questioned. ..... In recent years, 'no serious scholar has
ventured to postulate the non historicity of Jesus' or at any rate very
few, and they have not succeeded in disposing of the much stronger,
indeed very abundant, evidence to the contrary.
EP Sanders:
Historical reconstruction is never absolutely certain, and in the case
of Jesus it is sometimes highly uncertain. Despite this, we have a good
idea of the main lines of his ministry and his message. We know who he
was, what he did, what he taught, and why he died. ..... the dominant
view [among scholars] today seems to be that we can know pretty well
what Jesus was out to accomplish, that we can know a lot about what he
said, and that those two things make sense within the world of
first-century Judaism.