Each day in the industry

BART: Joel, each day you work in the music industry, a piece of your soul DIES. It hurts a lot at first, but as time passes, you feel it less and less.
BART: And in a certain amount of time, your soul will diminish to trace amounts and stop being an obstacle to your work.
BART: I call it your "INDUSTRY HALF-LIFE".
JOEL: Are you saying my soul is like... radioactive WASTE, sir?
BART: It's not UNlike it, Joel.