array, I'm experiencing first hand the beauty of, ahem, "legacy" code in prod. Four code blocks in a row that insert a break statement... After a return one; up to 13 levels of nested if- else if blocks (something so common my colleagues call that figure the "Doritos"); one class with a couple of thousands lines which has class declarations in the middle of pure spaghetti functions; TODO comments from a decade ago; functions with 3 (!) different declarations to perform the same exact logic... 1/2