Derrida might or might not have been saying stuff worth the investment of my time in trying to understand it. For now, I appreciate his freaking out forms of complacent, calcified, and mesmerized thinking.
Do I really want to try and follow Derrida's thought into his whirlpool of infinite contextuality? All I know or intuit is that there seems to be a deep world-aesthetic principle involved and a compelling metaphysical aura around whatever the heck he was saying.
Derrida -- Internet Encyclopedia of Philosophy
Derrida -- Wikipedia
The Science of Ghosts