I read the article twice and still doesn't make sense. I tried to make sense but no matter how I slice and dice the article, the "inverse parentheses" idea seems inconsistent or ill defined.

Two comments here which explain the ill-definedness of it:

https://news.ycombinator.com/item?id=46352560

https://news.ycombinator.com/item?id=46352697

Engagement from people trying to figure it out :-)

The blue/gold dress of HN nerd sniping