Discussion is sometimes helpful, I've found. It can add depth to the presentation. The uploader or the content creator can answer questions. I think comments

Discussion is sometimes helpful, I've found. It can add depth to the presentation. The uploader or the content creator can answer questions. I think comments can be extremely useful. It's a shame that Google is trying to force the G+ identity merger on Youtube users right now; every few times I use youtube, I have to answer a nagging pop-up with "Ask me later" (no way to disable the feature). Because I have a young child who is now getting into watching animal shows and children's cartoons on Youtube, I've had to enable the safety feature, which hides all comments behind a link. It's a pain, but it's the only way to avoid her seeing some appalling crap at the bottom of a perfectly innocent video. I'm sure she'll see it all when she's a teen, but I'd prefer her not to see it at age 8. That's the price of social media, I suppose; you have to take the good with the bad.