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JOHN SEXTON: Hi, I'm John Sexton on behalf of Expert Village. Today, we're going to be
learning how to play Portal, a game by Valve Software, a company with which I have no affiliation.
So the elevator reaches the end of the line and we can jump off here, and we find a button.
Let's see what that does. We press it and we noticed that a section of the wall is coming
out over here, and it comes out at an angle which kind of indicates that we're going to
need to launch ourselves out of this platform across the entire room and up to the upper
level where the companion cube is. The problem here is that that platform doesn't stay out
for very long; it has already gone back in. So this is another time-sensitive test where
we have to be very careful about how we do things. So we want to take a portal and place
it above and to the left of where that platform is going to come out of. And then we can place
another one on the wall right here so that we can quickly get from the area down here--I'm
looking straight across through the portal to where I am right now--and then down over
here to my left is where that platform is going to come out of the wall right there.
So I want to set that up so that I can hit this button, quickly run through the portal,
then come out in front of the platform and place another portal on it. And if we look
over here, we see that there's a platform very near the ground, most of which is the
poison-toxic stuff, but this one is a safe place. So what we're going to want to do is
to place an entrance portal here and the exit on the angled piece of the wall and then jump
down and be launched out across this portal across the room.