Just do usability testing with real target users. Expert evaluation does not reveal any surprises, so it’s limited in what it can do for you. An aside - I find

Just do usability testing with real target users. Expert evaluation does not reveal any surprises, so it’s limited in what it can do for you. An aside - I find it quite strange that HN has such a blind spot for user research. I’ve been in the UX/user research industry since the mid 2000s. It’s gone from being a niche thing (it was a struggle to find any employers in London who understood what user research was when I started out) - to being a standard practice in big tech companies. Apple, MS, Facebook, Spotify... They’re all at it. It’s something you really need to know about if your work involves making any kind of decisions that impact your users.