Below is how variety, sustainability and proximities are related, and why we need proximity thinking.

1. Variety (also think diversity) goes hand-in-hand with sustainability.

2. Sustainability is about environments and contexts, or more simply, proximities.

3. So, for sustainable proximities, we:
a. Need to, and get to, embrace variety.
b. Need to, and get to, create proximities that support variety.

4. To better think about, relate to, and create proximities, we need proximity thinking, also known as ProxThink. The ProxThink framework includes a sustainable proximities approach. By the way, variety is an integral part of proximity thinking.

P.S. You might also check out the varietypeople.com project.