Paradox Breaking Down

The Images had a problem uploading into the website so here are the links

Image 1
http://thescienceofdestruction.files.wordpress.com/2011/10/escher.gif

This image shows a paradox because it is contradicting itself being impossible. How can a hand be drawing another hand that is drawing the first hand. If the hand didn't exist how could it draw the other hand (this applies for both hands).

Image 2
http://artofrylee.files.wordpress.com/2012/01/schusters_clevis.jpg

The second image shows and impossible figure. It is a paradox because it appears to be a rectangular prism and it has no ending and one of the faces ends being a tube. Also you can see in the middle there is a indent between the two supposed rectangular figures is a tube aswell. In the final top part of the image there is the top face which also ends up being a tube. Making the entire image a paradox.

Image 3
http://xylem.aegean.gr/~modestos/mo.blog/wp-content/uploads/2007/12/penrose_triangle.jpg

This image of a triangle formed by rectagular prisms contradicts itself as the left rectangular prism seems to behind the bottom one; however, when you look closely you can see that it seems to be going both behind and in front. Made impossible by the third prism to the right.