Must We Know Everything?

[Angrboda]

What interests me is why theists think that knowing the origins of the universe, life, or humans matters to the question of whether there is a god. Why is it that anyone would think that we don't know necessarily means there is a god?

Because it sets up an argument from ignorance which is superficially compelling if you don't understand the fallacy.

e.g.
1. Either the flagellum evolved or it didn't;
2. We don't know how the flagellum evolved;
3. Therefore the flagellum probably didn't evolve.
Therefore design

#3 doesn't follow from 1 and 2; but people not familiar with the fallacy are easily misled by such arguments.