Why do you have to point out how stupid everyone is all the time?

I made this mobile to resemble the one that Charlotte has in her hotel room in Lost in Translation. I did this to avoid working on a paper. I had to hang it in a stupid place because my ceiling cannot be drilled into; it is made out of titanium. According to a phone conversation I just had with my dad, this is because concrete continues getting harder forever.

[Edited 05/02/07 to add a better photo]