First, this is about data access and not programming.
Second, that quote is from a time when compiler optimizations did not exist, and the programmer was supposed to use all kinds of clever tricks to speed up code (what today you get for free with -O3). That kind of optimization is the context of the quote, and it's hardly ever appropriate to just throw into some discussion about optimization.
Second, that quote is from a time when compiler optimizations did not exist, and the programmer was supposed to use all kinds of clever tricks to speed up code (what today you get for free with -O3). That kind of optimization is the context of the quote, and it's hardly ever appropriate to just throw into some discussion about optimization.