I think you can break down the sentence in two ways:
- Everything else + "is a key to learning. "
- “Being able to” x and “is a key to learning.” x is “objectively, confidently and reliably judge success and failure”
For #1 is it ok to break stuff down like that? Is it ok to treat the beginning part of the sentence as everything else? It’s everything besides the part about being a key to learning. Saying “Everything else” reduces what was said so you can focus on knowing what is a key to learning.
The first thing that I think of is what is a key to learning? What even is a key? Maybe I can understand what it is to judge stuff well first but what’s a key to learning even about? Maybe if I do figure out the beginning part of the sentence I could kind of see how judging well is a key to learning.
For #2, is it ok to break stuff down like that? Id like to know what it means to be able to do something. That makes me think about being able to breathe or read and write. How do you know you’re able to do something? How does that relate to being able to judge well?
I think one of the biggest parts to understanding probably is the “objectively, confidently and reliably judge success and failure”. Maybe including being able to do that too. All the adverbs are different words, and I think they mean specific things. They also look like they fit together like if you’re objective then you can be confident about stuff. Idk if that’s what the quote is talking about.