Shorts provide the following:
1) A chance to perfect a potential filmmaker's techniques of lighting, framing, directing, organizing, writing, planning, and budgeting, but on DV, an affordable medium.
2) A chance to perfect a filmmaker's techniques of lighting, framing, directing, organizing, writing, planning, and budgeting, but on s8mm, 16mm or s16mm, costing only $200-$5000 to actually make cinema, with film. This allows a filmmaker to have the experience of shooting 1,2,3, or 10 s8 or s16 5-20min shorts which will directly translate into preparedness when that filmmaker is given the opportunity to shoot 35 or a derivitive therof. If you just jumped right into 35mm filmmaking, you would have no clue how all the different facets from visuals to sound to logistics functions together. You would have no clue on how to frame shots. You would be a clueless director/filmmaker unless you have worked hands on before.
3) You are commercially more viable as an entity because you have demonstrative works. DV or film, you have made cinema and you can show that to someone who wants to invest in you. They are investing in YOU. They believe in YOU. How can you convince them you can make a 90 minute piece of cinema that will MAKE MONEY if they have nothing to go by to begin to believe in YOU?
4) The more cinema you make, theoretically, the more all around your techniques and storytelling improves, and thus so does your demo reel. 1 short is tough to bank on no matter how good it is. 4 shorts is great if they vary in genre and show your talent well. 40 shorts give you a lot of choice of what to show investors. And it show that you have a long history of completing projects.
5) As Clive said, the feature is the dangling carrot. Someday 15% of short filmmakers get to shoot a feature. Of those, probably 10% will do anything or will make money. That means, you need to deliver or you will have a hard time ever making anything ever again. Kevin Smith and others like him who max their CC's and make a film that is bought by Miramax is a rarity. That method will likely make you in debt forever or Bankrupt. There are far more filmmakers who have gone down that road that are in serious debt because they went down that road. That is why to make a feature you can go with the two following bits:
A) USE OPM. If the film doesn't make a dime on theatrical or foreign, you will likely come close to making back your money with DTV. If you don't, you will not end up going bankrupt.
B) Know your sh**. A filmmaker with connections previosuly established can very easily verbally manage to secure many of the important personnel, stock, developing, studio time,trucks, etc. for relative bargains by getting them to go for little up front and percentage on the backend. This can bring down the overall cost of the production, raise the potential for a deliverable feature with good or great quality visual and audio components, and cut the number of crew needed for such a shoot directly afftecting the dependance on a DP and other experts to raise the production quality of the film.
The combination of these two elements can deliver a film for a budget that smart investors can forsee becomming lucrative financially down the road, and a gameplan for all involved to believe in.
This is a business about making those who will ultimately help you to make a successful feature appreciate your talents and believe enough in you and your vision to put their money, time, and talents on the line to deliver a wonderful product. You need to demonstrate that you are worth this belief. You need to make demonstrative shorts.
SonnyBoo may be abrasive to an extent in his promotions and efforts to build his image to garner the belief that is needed for him to make a feature. But he is arguably the best aspiring filmmaker all around that is cpable of delivering a feature product tomorrow that I have seen come to indietalk. He is *there* because he has put in the time, money, and willpower to get there. Read his story on his website. If he is successful, he will be a true rags to riches story. You may not want to emulate his films, or his style, but you have to admire his drive and determination to reach the point where he is. Horrors of War may indeed suprise you. Give him the chance to prove you right or wrong.
Added: I am not ready to shoot a feature. Not because I couldn't do it, not because I don't have the techincal knowhow, the idea, the script or the connections, or the ability to raise money for my idea. I'm not ready because I have a lot to learn still about the whole process. indietalk (Dan), Clive, Scott Spears, SonnyBoo, and all others that have made demonstrative shorts and films will testify that making the film is only half the work. You need to generate buzz, get it to festivals, support it at festivals, sell the distribution, get press, and ultimately get your film into theaters or in a consumers DVD player. I have not been there yet, because I don't have something to take to a Sundance or a Toronto or a Telluride or or or. Even though my short won an award at a festival and so far has gotten very good reviews that doesn't allow me to jump in over my head and just make a movie. I have a lot to learn and I plan to learn it soon through a dynamic short I will make. I might then be ready to make a feature and greenlight my feature project. Or, I might not. Its about smart decisions, good cinema, dedication, and willpower. Its not about jumping out a window, calling yourself a director, and falling flat on your face. Remember too, once you do finally make a feature, and it is actually successful, that is just the beginning. You need plans for after that successful feature too.