Comment by closewith

Old-school fora and mailing lists could avoid being bubbles when moderation allowed dissenting views to surface instead of burying them. Of course, biased moderation could still create bubbles by pruning dissent.

Social platforms built on voting, like HN, will almost always drift into bubbles of like-minded posts and comments. The only variation is in which views get upranked.

That isn’t necessarily bad. YC clearly prefers HN to filter for a certain entrepreneurial mindset. Bubbles can serve a purpose, but it’s worth recognising that this is a manipulated environment - in many ways hollow - and not a reflection of the broader world.