[polygot]

Thanks for the feedback! I didn't expect my post to garner a lot of attention. I am totally ok with rewriting part 1, potentially to make it more concise to prevent confusion (wow, this post is super long, monads must be complex!) is what I'd like to avoid.

I can reproduce the double line issue in part 2, this was my mistake and I missed it as part of my editing process. I'll delete part 2 while I make the corrections.