If you're always returning to one approach, you're missing out.
Only agile, ever, means you're missing out on amazingly useful RAD practices. If you swear by refactoring, you may be doubling development time because thinking a design through before starting might've saved you learning it while typing code. If you only ever build native apps, you may not know when a web app is a better solution. Functional programming is cool, but OO is also cool.
If you're always returning to one approach, you're missing out.
Only agile, ever, means you're missing out on amazingly useful RAD practices. If you swear by refactoring, you may be doubling development time because thinking a design through before starting might've saved you learning it while typing code. If you only ever build native apps, you may not know when a web app is a better solution. Functional programming is cool, but OO is also cool.