[codersfocus]

Neither concept nor plan are appropriate alternatives for scheme. Let's not argue with the inventors of the language on word choice.

[dgfitz]

I have no desire to argue. I like understanding things and I was hopeful to understand why I felt the way I did when I read that sentence.

I learned a lot! I’m really grateful that people-who-weren’t-you read my question impartially and contributed their experiences.