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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 we set a portal up there and one right here to allow ourselves to get back up there,
and then we can--be careful not to get hit by a power ball if one is bouncing. And it
seems to be safe. Whenever we activated that first power ball receptacle, it was actually
the second power ball dispenser which was shut down. So even though we used the power
ball from the first dispenser to activate that receptacle, this one is still dispensing
balls. So we need to put the blue portal right back in the same spot where we had it the
first time, and the power ball will come through and we need to make a new exit for it. So
we go back down to the open area and see that there is a platform jutting out from the wall
here, right across from this series of doors. So if we make the exit for the portal there,
we can then crouch. And it's important to crouch; otherwise, you'll get hit by the ball.
We can crouch on this pressure plate. You could hold the doors open and watch it go
through. So now that power receptacle has been activated, we can go and pick up our
companion cube and take it with us to the end of the test chamber.