implement Venn interface

Idea

 

This would be a powerful way of visualizing overlapping groups of things, and editing them.

 

This would be a powerful way to visualize overlapping groups of items and editing what Pointers they're in and related metadata. E.g., dragging a User card from a circle for people who like passion fruit to the overlap between that and a circle for people who like mango would add mango to their "+favorite fruits" card.

 

 

+relevant user stories