I'm not arguing against unit tests. Just that using them to speed up iteration is not a good way to approach that problem. They can of course be useful for othe

I'm not arguing against unit tests. Just that using them to speed up iteration is not a good way to approach that problem. They can of course be useful for other things. And obviously the things they don't test will still be found by the client in particular all the things you miss by not actually increasing iteration speed.