📝 readme: add strangeness budget snippet

README.md

@@ -412,26 +412,34 @@ something like:
 let bytes = (await client.send(request)).into_body();
 ```
 
-many discussions about the validity of this approach have already been borne out at length, and
-i'll point to [this][ceej-postfix] excellent write-up about the benefits of postfix `await` if
-you are interested in reading further.
+many discussions about the validity of this approach have already been borne out at
+[great][rust-57640] [length][rust-50547]. i'll point to [this][ceej-postfix] excellent write-up
+about the benefits of postfix `await` if you are interested in reading further. suffice to say,
+this decision was controversial, and it strayed outside of what some people considered reasonable
+syntax for asynchrony.
 
-one of the core points of debate when weighing out the tradeoffs of this choice was the concept of
-a "_strangeness budget_." the premise of a strangeness budget is the number of new concepts that
-a reader would need to familiarize themselves with in order to be fluent in a new language. those
-in opposition to this design argued that much of this budget had already been spent on the borrow
-checker, pattern matching, etc.
+Steve Klabnik [wrote][klabnik-budget] about this phenomenon:
+
+> [I]t’s important to be considerate of how many things in your language will be strange for your
+> target audience, because if you put too many strange things in, they won’t give it a try.
+>
+> You can see us avoiding blowing the budget in Rust with many of our syntactic choices. We chose
+> to stick with curly braces, for example, because one of our major target audiences, systems
+> programmers, is currently using a curly brace language. Instead, we spend this strangeness
+> budget on our major, core feature: ownership and borrowing.
+
+the implicit part of a strangeness budget, as with the idea of "categories" for human languages,
+is who your students are.
 
-the _implicit_ part of this strangeness budget is what concepts would be novel to newcomers.
 our summing exercise above illustrated that it is both pragmatic and reasonable to frame this
 budget in terms of how far the language strays from "_C-ish_", but that such a budget could exist
 in the first place is illustrative of how relatively homogenous the syntactic structure of
 most programming languages are today.
 
-readability is a property of the reader, indeed.
+Aaron Hsu has remarked in his [talks][hsu-apl] about APL that the people who have the most
+trouble learning languages like APL are often _computer science students_.
 
-* TODO LINK TO CEEJ POST ON POSTFIX AWAIT
-* TODO FIND GOOD SUMMARY OF STRANGENESS BUDGET
+readability is a property of the reader, indeed!
 
 ## 🍄 my experience
 
@@ -689,7 +697,6 @@ todo...
   * setting up a reference for coordinates? run `nvim src/a.rs`, `4z<Enter>`, `:split`, `:res 4`. one shell command, one navigation step, two commands.
   * rerunning tests in an i3 window `fd . | entr -rc cargo test --message-format=short --quiet`
 * picking this project back up after long breaks was surprisingly easy. there wasn't much to read!
-* point to "does apl need a type system" for further reading
 * brevity allows readers to see parallels at a function/type/module level, rather than an expression level
   * making use of _horizontal_ space in code formatting! c programmers commonly do this too :) determining when felt just the same as deciding when to place empty-lines in "traditional" code.
   * whitespace alignment is common in many styles. terse code allows whitespace alignment to highlight common structures, at a higher abstraction
@@ -719,6 +726,10 @@ todo...
 * ["The language strangeness budget"](https://steveklabnik.com/writing/the-language-strangeness-budget)
 * ["Why K"](https://xpqz.github.io/kbook/Introduction.html#why-k)
 * ["Why Rust’s postfix await syntax is good"](https://blog.ceejbot.com/posts/postfix-await/)
+* rust-lang/rust#57640
+* https://github.com/rust-lang/rust/issues/57640
+* https://github.com/rust-lang/rust/issues/50547
+* ["Does APL Need A Type System?"](https://www.youtube.com/watch?v=z8MVKianh54)
 
 [api-guidelines]: https://rust-lang.github.io/api-guidelines/future-proofing.html
 [incunabulum]: https://code.jsoftware.com/wiki/Essays/Incunabulum
@@ -728,3 +739,6 @@ todo...
 [klabnik-budget]: https://steveklabnik.com/writing/the-language-strangeness-budget
 [why-k]: https://xpqz.github.io/kbook/Introduction.html#why-k
 [ceej-postfix]: https://blog.ceejbot.com/posts/postfix-await/
+[rust-57640]: https://github.com/rust-lang/rust/issues/57640
+[rust-50547]: https://github.com/rust-lang/rust/issues/50547
+[hsu-apl]: https://www.youtube.com/watch?v=z8MVKianh54