What a treat to have Erin back on Necessary & Sufficient. It took some doing, but I made it happen. Efforts paid off, too–what other guest could transition so seamlessly from baking to 17th century Dutch painting and back?
Necessary & Sufficient
Two people, two words, a few minutes.
Necessary & Sufficient 
For the record, here’s the *real* definition of liminal:
1
: of or relating to a sensory threshold
2
: barely perceptible
3
: of, relating to, or being an intermediate state, phase, or condition : in-between, transitional
So, maybe it still works!
Boundary conditions are where *all* the interesting things happen! Another great conversation to listen to while driving 🙂