We bump what we think the community might like and is aligned with the site guidelines. And only to the lower half of the front page, whence it soon falls away if we guessed wrong. The posts aren't necessarily what we ourselves like or think is good; mostly we don't have time to decide on that.

Fair enough. As I mentioned I am pretty happy with the content on here. Also happy with the moderations so thank you for that! :)

You have time to decide what to bump, but not to decide what you like? Makes no sense.

They explicitly said they bump what they think the community might like. It doesn’t take a thorough reading of every submission to make that guess.

It does, unless you want to create an echo chamber (which HN somewhat is)

What would make HN less of an echo chamber?

I don't think it can be solved by moderation, if that makes you feel better

It makes me feel worse. But I'd like to hear why you say that HN somewhat is an echo chamber, and what you think would make it less of one, or where you might look for examples of non-echo-chambers on the internet. You're welcome to reply here, or email hn@ycombinator.com.

It's possible that you've observed something that's not on our radar, and such information is important for us to be aware of, even if we can't solve it by moderation.

Do you have any answer to the question?

I’ve upvoted opinion pieces that I disagree with, but I wanted to see what the community thought.

You have time to decide if the community might like it but not if yourselves do? Bit weird.

If you do something hundreds of times a day for years, you get fast at it. Also, don't forget I said "might". These are quick, approximate guesses.

I guess a good community needs constant upkeep, like anything else in life. The community was created over what a few people thought was good content, and if left alone will probably get dissolved in some "large reddit" effect.