Nice conversation and some really interesting thoughts being well presented.
For my part, I have decided to refine my initial opposition to the HUD somewhat, in which I inferred the visible information is too easily misinterpreted and/or applied.
I was mostly referring to newer, or less competent players, of course, I have no experience of advanced competence!
Others have put forward the argument that it's better to use your brain, levelling the playing field so to speak, and that a HUD have disadvantages, even negatively discriminates against, a HUD have not.
Even given this was my knee-jerk opinion I cannot agree with it anymore, it seems a very it's blinkered and possibly even elitist attitude and here is why I think this.
Most people can have a HUD if they want one, you can even get one for just depositing and playing, or you can get one through some sort of promotion, that sort of thing. I think there are even free ones but I suggest that without substantiation.
The obvious counter that new players don't know about HUDs doesn't hold water in my opinion, because there is enough information available to find out. For those who don't know what a HUD is, ask or research poker before you play, or don't and gamble.
I likely wouldn't try to do something without finding out what equipment and skills I needed first, especially if it was going to cost me money to do it. Yes, it is a little facetious, but the point my clear I think.
My main point however, is that a HUD can be very beneficial to people who are playing now, or would like to play, but who may have some sort of disability or incapacity that prevents them from assimilating the vast array of data a poker player is presented with even during one session on just one table.
Furthermore, how many times have we sat in frustration at how long it takes a villain to click a damned button! Did we consider they may be disabled?
Playing with a physical disability offers further disadvantages - and possibly some advantages - in that it may inhibit note taking (suggest in an earlier post) in the timespan available. I have used voice activated software often enough as an educational tool to have experienced some of the limitations on offer there (perhaps some I.T. super hero has further insight). A HUD in such instances could be of valuable assistance.
I really do try to play without a HUD but have weak retention which does make it difficult, which is why I try to play without one.
So would the detractors ( myself included initially) discriminate against such people, intentionally or otherwise?
My arguments may not be succinctly presented or even correct, but I am available for education!
tl;dr my drivel:
A HUD could in itself be a ' field leveller.'