Agreed. Make me whiteboard or live-code if you wanna make me look and feel like I've not actually had over a dozen years of productive experience designing systems and shipping code and fixing other people's broken crap, and you'd love to watch me stress out and forget how to write a damn loop so you can complain on HN about how I was clearly lying about my experience & abilities and that's why you have to make people live-code or whiteboard. Challenges are, at least, preferable to that, for sure.