I have read quite a few things that I didn't really care for in the first pass, but then when someone explained their vision with more details, I changed my opinion.

In the concept reviews I've sat through --- probably 75-100 of them --- I've learned to keep an open mind about whatever I have read, and understand that the mechanics are just one tiny piece; art and music can completely change how core mechanics are interpreted.

In one specific case after reading the design it seemed like a building game designed for small kids using construction equipment as dump trucks, loaders, cranes, and so on. It seemed like a "bob the builder" game for young kids. Then I heard the two guys describing the creative vision as a game that inspired a bunch of machismo and also father/son bonding. After hearing the presentation I could totally see the game in a different light. I would have to say it was the style of presentation. When I read it, I thought "This is a 5 year old playing a toon-shaded plastic dump truck while a xylophone tinkles away in the background". When I saw the presentation I was thinking "This is motorcycle dad playing with his kid in a gritty sandbox, ripping up the landscape with dynamite, and building an epic city with blood and sweat and rock music. I don't have a son and I still want to rip into the dynamite box." The presentation totally changed my interpretation of the game mechanics.

I understand this kind of thinking is common in many industries. I remember reading years ago that the movie script for "Pretty Woman" was rejected by a bunch of people because on first reading those people thought it a gritty drama rather than a romantic comedy; after the movie was announced and clips were shown, many of those people said "I made a big mistake."

I think the issues being described are less an issue with your interpretation of the concepts, and more an issue with the presentation of it. If you're getting an impression that turns out to be completely wrong, I'd assume that the information isn't being presented in a manner that makes it understandable.

Personally, I feel the single most important thing in a presentation is something small and demonstrable. My preference is a mock-up video of simple game mechanics that present the core features, look and feel of the title. It can be entirely pre-rendered and fairly rough, but it's the quickest and easiest way to get the concept across to someone who has never seen your concept before.

I think people often overrate the "idea/concept". If I say, I'd like to make a platformer with a flying pig, well, it could turn out great or totally suck. It's not a bout the idea/concept, it's about what you make out of it. It's about how the individual levels look like, how responsive the gameplay is, if the flying pig has a funny gimmik or not, etc.

However, like the saying goes "too many cooks spoil the broth" ...because to some extend making a game is like cooking, and if everyone wants to contribute slightly different ideas, it'll tear the development it many directions instead of one ...because, let's not forget it, making a game is a lot of work. And even if they share the same direction, there's no guarantee 30 individuals can make a decent game.

As for the actual question, I think the "package" is more important for me than the concept. There are two key questions for: can these people actually pull it of? does the game look fun? If it's well presented, it way well convince me, even if I'm not an adept of the genre.

The closer to the final idea you can show, the best.. I think reading/writing is the worst for presenting an idea (personal opinion), specially a game idea. Read/write the documentation only, to give out the idea, Id rely on mockups..Its problematic if the one with the idea dont have any skill to build up mockups, but even so, making an step by step graphic slide show would be already better than giving ppl stuff to read.

Concept artists are a great tool for helping out giving the idea a look and a more concrete concept. From a speech describing a game idea many different sketches can show up from a concept artist. Sometimes the sketches make the "speecher" even more amused with his own idea. ( "vision" is the quality highlighted here)

if you read enough about a game concept to decide you dislike it, can anything change your mind and make you like it instead? Is there any style of presentation or choice of what info to include in the presentation that makes you more likely to become enthusiastic about a game concept? Or conversely, anything people should avoid in their presentations if they are trying to get you enthused about their concept? And more abstractly, do you think this issue is a political, advertisment, or artistic ideals/taste issue?

If I don't like an idea, I will tell you. Generally, I'll automatically tell you why. (If not, then ASK me)....

It's then your job to explain to me how I'm wrong, or why my thoughts/worries/dislikes do not apply to your situation or can/will be avoided. If I don't like your idea because it reminds me of Halo and I hate Halo (true story), explain to me why your game isn't like Halo. If I think your idea is a re-hashing of a failed idea or one that's been done N-teen times in the past, explain to me how your idea is original.

In other words, it's not MY job to convince me I'm wrong--that's all presentation is good for, making me change my mind. It's the substance of your argument/sales-pitch that will waver me. WHAT you say, rather than HOW you say it.

My stances are generally from an artistic point of view, including my ability to relate with your idea, if applicable. In other words, if I think your RPG idea is a plainer-than-vanilla game, but the characters/story is relatable or intriguing, I would want to be a part of "a game with an amazing story." If I think your game is a re-hash of Tetris, but it's well themed, and the pieces fit without forcing them, I'll want to be a part of "a cleverly thematic game."

So, your GAME'S presentation can sell me as quick as content, usually quicker. A DESIGNER'S presentation will never sell me as well as the content...

That's interesting to me, because I always pick a written description over day, a video, if I want to learn about a new piece of software or a new theory or whatever. I do like visual aids though.

Me too, but that's when I want to learn about new things, changing my mind is something else.

It's interesting that one party can get way excited over a concept while another party dislikes it and doesn't see it happening. Can there truly be such disparity between taste? There could be, but I don't think that's the case most of the time. Getting excited over a concept is a process inside our head that can be very hard to communicate, because often it's based on past experiences, nostalgia, visualization and more. In order to get others, that did not have a similar experience, excited about your concept and change their minds, you need to nurture their imagination. To do this you need to analyse why you think it's such a great concept and find out what it is that you think you're communicating, and make sure that you actually communicate it.