I think the article does a decent job of explaining how important properly written SQL is to the health of an application. I disagree with the notion that you

I think the article does a decent job of explaining how important properly written SQL is to the health of an application. I disagree with the notion that you should rely on your hardware or juice up your system to gain performance. This should be a last resort only after ensuring that you have well written SQL running on a properly laid-out database.* *caveat: Hardware can sometimes be cheaper than paying somebody to write SQL statements the right way. Edit: changed "can" to "rely"