This image was not mistake. Guess I missed out on one of those life lessons :)
The wallpaper version is available at the preceding link.
Today's Gratitude Item: That Geogebra 5 has been released. Whilst this is still in beta, it allows users to create 3D mathematical models which is a massive step forward. Sadly, the models can't yet be exported successfully to the web but I'm hopeful that this will be supported at some point in the future.