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You can edit the top answer or post a new answer, I have got 50 odd votes from adding asp.net's encryption/decryption methods that were added in 3.5 to old .net encryption questions. I've done it on a few other answers too, if the top answer seems clunky or inelegant, I tend to dig a bit deeper to see if there's a better way. Also, scrolling down a bit in the answers you usually find new ways of doing something as an…
You can. Most people can't. As the site gets aggressive against newcomers and old timers decide they have better things to do, there will be less and less people available edit them. And don't think those editions are as high quality as the ones that come by the official channel, where literally anybody in the world with the needed knowledge can reply, and there is a robust process for vetting. Besides, despite any t…
I Google incredibly basic stuff like how to read files, how to read a web page (something that changes every 5 months in .Net), hell, even basic jQuery functionality.
The difference is that I have the knowledge deep down, I just use SO and Google as a prompt. I know the correct answer as soon as I see it. I get exposed to a lot of basic answers on SO, and generally they're right.
SO is generally good and is not suffering the problem you or the OP claim.