Response to copyright ted talk

I thought this ted talk was really interesting.  It made me think about copyrights in a whole new way.  One thing it reminded me of is when rappers and other artists use whats called a "sample"  in their music. The first song that comes to mind for me is Kanye West's Gold digger he uses a sample of a Ray Charles song.  I think that copyrights should be ignored for the purpose of art, creativity, or school projects.  And musicians use other artists songs in their music all the time, I'm not sure if they pay for the sample but its still not plagiarism.