 So now we're out in the hallway and we have sunlight coming in a window and reflecting off the floor. Now what I've done is I've placed a small picture here. Now you can see there's big, bold words that say fish and then small little fainter diagrams that say fish. And you can read that from right here. What we're going to do though is we're going to back up until the glare from the window is over that sheet with the fish. So you can imagine this is like if we were outside and that was a pond and that's the water reflecting off the pond. So now I've got my my filter here again. This is a polarizing filter and I'm going to start with it where it's in the horizontal direction and bring this up here and you can see there's still a lot of glare. Now as I rotate, you can see that that's changed. And if we zoom in a little here, you can actually see the fish while the polarizing filter was placed in front of it. But if I rotate that polarizing filter back, we see the glare is coming off of that so much you can't see the fish anymore.