Actually, yes, that's the point. We have to be focussed. Not individually, but as a team. That's why titles matter, they define areas of responsibilty and minimise duplication of effort. There's no reason why one person cannot have several roles, but it makes sense to divide the tasks according to ability and level of comittment. We also need to present the image of a well-organised and motivated team properly geared up to carry out the project, rather than a loose-knit bunch of amateurs who are liable to lose interest, or just "take the money and run". In other words, any potential backers needs to view us as a good risk. Defined roles help to achieve that.