In engineering in the US I have found this to be much more common than in the UK. Our design reviews in the UK were cut-throat and yet impersonal. So we defended our design but if it was defeated that wasn't a judgment against the engineer. We took the view that it's much better to find out at the start than to wait until the thing is almost complete and then find it won't work. In the places I have worked here they really don't want to know when they are wrong.