[Question] What difference between `Async` and `Sync`

[Mark24Code]

I wish the document with more examples and details explanation. 😃

[trevorturk]

Likely this should be moved to a Discussion, but a couple quick links that may help explain things:

• https://socketry.github.io/async/guides/best-practices/index#use-a-top-level-sync-to-denote-the-root-of-your-program
• Suggested API change #237

I bet additional documentation would be welcome, if you think that's something you could help with after reading through these docs!