How do Chief and all the other spartans know how to use promethean weapons? And the phaeton? Is that ever explained?
The UNSC have been studying Forerunner tech for years.
In the fall of reach novel, if im not wrong, its said that Chief has something special that makes him understand alien weapons and space ships. Something similar to when you don’t know how to fix an issue on your pc but still manage to solve it by clicking here and there, you know… using your brain.