What makes a short film good?

This is an interesting article that I found:

http://pov.imv.au.dk/Issue_05/section_4/artc2A.html

The title is called 'What makes a short film good?' and is a large study upon the short film industry. Using quotes from film critics and heads of film organisations this essay explores themes such as funding, productivity and public demand.

A section I was very interested in of this of study is the debate into "How "good" are short films in terms of giving the director valuable experience for future feature production?"

This is because, in the future I wish to study film production at University and I would like to think that I would gain sufficient experience from making short films for when I go to University and perhaps onto bigger film shoots in later life.

Through these points, I feel I have benefitted largely from this article, as I have read that I should use various points to make my film successful. The article takes quotes from film professionals such as:
"Probably anything sub 30 minutes narrative/non-narrative designed to entertain/challenge a theoretical audience.' Paul Swadel".
"For me a short film is a piece of work under half an hour which tells a story - narrative is very important to me.' Jeena Murphy"
I personally think that if I want to create a successful short film, I should listen to these professionals, to help me along the way.