另一个版本中对动机的完整解释：
It's a downward spiralto the end of all times.
And there's no chance that we can survive.
I mean...
70 million people every year
are brought onto this Earth.
What are they doing?
Sucking up our resources.
There's too many people, so what do we do?
Just keep them around?
Let's kill them.
Let's get rid of them.
Good, thank you.
Thanks for-- thanks for coming out.
But you know what?
We're at capacity.
We're at capacity now.
So... sorry, no more.
No more.
So that's what I'll do.
Why not?
That's my plan.
That's what I want to do.
Let's just clean the world,
so maybe the rest of us can sustain a little bit of life.
So maybe that's what I'll do in the future.
I'll help you out.
I'll help you out,
and I will cleanse,
make more room for you.
I will exhibit my own brand of population control...
for you.
