Abrasion is a process to help shave off little slivers of disconfirming evidence.

It is a process to produce these little bits of disconfirming evidence.

Tension is not abrasion^[ane].

Tension is stressful but does not necessarily turn up the raw material to become great.

Abrasion brings the disconfirming evidence to the surface.

Healthy abrasion helps make sure the group is actually dealing with disconfirming evidence.