In Chapter 22, Edwin visits Cole, and Cole voices his frustration over not seeing the Spirit Bear even though he has done everything possible to become invisible... how does Edwin respond?

From the text:

During one of Edwin’s visits, Cole expressed his frustration. “I’ve tried to be invisible,” he said. “I hide and try not to smell like a human. I’ve even smeared cedar boughs and ashes all over my body, but I still haven’t seen the Spirit Bear again.”

“Maybe you still aren’t invisible,”Edwin said, climbing into his skiff to leave. “Have you danced the dance of anger yet?”