Imagine that the first race, facing the Reaper threat and having no idea how to defeat them, sits down and designs a trigger guard. And that’s it. Then they bury the plans for the trigger guard and they die. 50,000 years later, the next race is getting pulverized. Before they die, they find the plans for the trigger guard. They have no idea what it’s for or what it does, but they design a handle to go with it. They add it to the plans, and re-bury them.
And so it goes. 50,000 years. A safety mechanism. A rifled barrel. A magazine. A rear sight. The trigger. A front sight. A muzzle. An ejection port. Nobody knows what any of this does.
Then Shepard & Co come along. They follow the plans, which builds a Glock 17 pistol. Admiral Hackett points to the chamber. Something goes in there, but we don’t know what it is or what it does.
Then you meet the Star Child, who just happens to be a 9mm bullet, which miraculously is a perfect fit for this pistol, even though the people who built it have no idea what a bullet is or what it does.
Then the Star Child explains that the next step is to put the bullet in the chamber, aim the weapon at your foot, and pull the trigger. That’s how you “win”.
For example
First time at the end I immediately attacked the star child.
Turns out that’s also an end.