[rkagerer]

When was it that you last verified something by yourself, with an experiment?

Just a few weeks ago. I did a simple experiment to check whether the Super-94 at my local Chevron is indeed ethanol-free. It wasn't.

[dools]

Now imagine you were able to go and edit the sign that says it is ethanol free to add the details of your test and dispute the claim, that would improve the knowledge.

[LeoPanthera]

This is nice analogy, but a wrong analogy. Wikipedia specifically does not allow original research.

https://en.wikipedia.org/wiki/Wikipedia:No_original_research

[croemer]

For that to make it into Wikipedia you'd have to first write an article in a reputable source.

[tux3]

Or rather, have a reputable source write an article about your work. If you write the news article about your own work and they publish it, the article is still a primary source (despite not being self-published)!