What are some challenges associated with UX?

It's not concrete; It includes basically everything. Hard to define what it is sometimes Often linked to technical ability; e.g system response time (loading is really boring but needed) Standardised tools; need to do alot of work to understand where things have gone wrong, even with tools. Can overemphasise 'simplicity' and 'intuitive'; can make things too simple, and need to consider what an expert might want UX can be a marginal factor in some settings; Can worry too much about it and forget to get the core usability right Hard to combine form and function; sometimes it can work really well, but look ugly. How do users express emotional needs; very challenging to convert to deisgn requirements. One way is kansei engineering.