> There are also analysis methods (names escaping me, and Google fu is weak today) that look at loops, procedure calls, dependency graphs, and other things to a

> There are also analysis methods (names escaping me, and Google fu is weak today) that look at loops, procedure calls, dependency graphs, and other things to attempt to discern (should be treated as guidelines and not rules) the complexity of a program using objective metrics. Cyclomatic complexity https://en.wikipedia.org/wiki/Cyclomatic_complexity https://en.wikipedia.org/wiki/Cyclomatic_complexity might be what you're thinking about.