Try this thing. It's trippy.
I can only see it going one way and cant even begin to see how it could be going the other way.. then i look away and look back and it's going the other way.
http://www.news.com.au/perthnow/story/0,21598,22492511-5005375,00.html
I can only see it going one way and cant even begin to see how it could be going the other way.. then i look away and look back and it's going the other way.
http://www.news.com.au/perthnow/story/0,21598,22492511-5005375,00.html