> There should be a way for us to navigate different bubbles, to inhabit different, neutral profiles to explore other niches of population

Twitter is the app for that. Set up lists of different individuals so you can switch between different viewpoints in two clicks. No need to follow anybody on your list.

It's actually fascinating to do so. Watch 'the reality' of a current or political event contort as you switch from 'Liberal', 'Conservative', 'Regressive Left', 'Alt-Right' streams of thought.

In fact, that would make an interesting website. A Twitter version of http://graphics.wsj.com/blue-feed-red-feed .