On 28/03/2011 18:35, Nathan wrote:
The bar for contributing is higher. Whether because editing is more technically challenging, or because the rules and standards are more complex, or simply because more of what people know is documented than it was 4 years ago... it's harder in a variety of ways for people to contribute significantly on a regular basis (i.e. become regular editors, as opposed to making several contributions and not returning).
Ah there is the reason, the sum of all human knowledge is approaching completion. Well done to all.