and what we did here is we turned the world
under their feet. And watch its response.
So this animal has actually had the whole world
turned under its feet. It's turned by 90 degrees.
But it doesn't flinch. It knows exactly where it wants to go,
and it heads off in that particular direction.
So our next question then was,
how are they doing this?
What are they doing? And there was a cue that was available to us.
It was that every now and then they'd climb on top of the ball
and they'd take a look at the world around them.
And what do you think they could be looking at
as they climb on top of the ball?
What are the obvious cues that this animal could use
to direct its movement? And the most obvious one
is to look at the sky, and so we thought,
now what could they be looking at in the sky?
And the obvious thing to look at is the sun.
So a classic experiment here,
in that what we did was we moved the sun.
What we're going to do now is shade the sun with a board