Demian, the goal of Wikipedia is to be an online encyclopedia:

"a comprehensive written compendium that contains information on all branches of knowledge or a particular branch of knowledge." (source: Wikipedia )

The goal of Yedda is to be a platform for exchanging personal knowledge - where the trigger is your question, with its unique emphasize and circumstances.

And when you post your question, anyone who has relevant knowledge can post answers or comments to the question page. The interaction model is one of conversation, where different people may have different, conflicting, and possibly all correct answers.

This is different from Wikipedia, where the interaction model revolves around creating a single unified balanced view (page) for each topic.

Both models (and quite a few others as well...) are valid, each one with its own strengths and weaknesses.