In general I like this essay, but I do see how it left the impression that Lisp is about making all your data into executable programs. Most data would be read

In general I like this essay, but I do see how it left the impression that Lisp is about making all your data into executable programs. Most data would be read and written with the same functions that read and write programs, but the data would not be evaluated as a program. Among his examples, only configuration files seem suitable for that. That being said, even if you did make log files into programs, there's never an issue of escaping text properly. The function that writes data always escapes strings so they'll read back in as the same string, not as any kind of structure.