Merge pull request #89 from pyscript/issue-84

Fix #84 - Provide enough details behind the PyScript project and stack

Author: WebReflection

Diff for: docs/user-guide/architecture.md

@@ -74,6 +74,42 @@ PolyScript's capabilities, upon which PyScript is built, can be summarised as:
   (in addition to Pyodide and MicroPython, PolyScript works with Lua and Ruby -
   although these are beyond the scope of this project).
 
+#### How to contribute
+
+The *Polyscript* scope can then be summarized as such:
+
+  * provide as little as possible abstraction to bootstrap different interpreters (Pyodide, MicroPython, R, Lua, Ruby, others ...) without affecting *PyScript* goal
+  * simplify the bootstrap of any interpreter through DOM primitives (script, custom-elements, or both ...)
+  * understand and parse any explicit configuration option (being this a file to parse or an already parsed object literal)
+  * forward any defined **hook** to the interpreter, either main or worker thread, so that code before, or right after, can be transparently executed
+  * orchestrate a single bootstrap per each involved element, being this a script or a `<custom-script>` on the living page
+  * ensure a *Worker*, optionally *Atomics* and *SharedArrayBuffer* based, stand-alone environment can be bootstrapped and available for at least not experimental runtime (Lua, Ruby, [others](https://pyscript.github.io/polyscript/#interpreter-features))
+
+While this is a simplification of all the things polyscript does behind the scene, the rule of thumb to "*blame*" *polyscript* for anything affecting your project/idea is likely:
+
+  * is my interpreter not loading?
+  * where are errors around my interpreter not loading?
+  * is my *HTML* event not triggering? (`py-*` or `mpy-*` or ...)
+  * how come this feature handled explicitly by *polyscript* is not reflected in my *PyScript* project? (this is likely and advanced issue/use case, but it's always OK to ask *why* in polyscript, and answers will flow accordingly)
+
+To summarize, as much as *PyScript* users should never encounter one of these issues, it is possible some specific feature request or issue might be enabled in polyscript first to land then in PyScript.
+
+#### Coincident
+
+At the core of *polyscript* project there is one extra project enabling all the seamless worker to main, and vice-versa, features called [coincident](https://github.com/WebReflection/coincident#readme).
+
+The purpose of this project is to enable, in a memory / garbage collector friendly way, a communication channel between one thread and another, handling the main thread dealing with workers references, or the other way around, as its best core feature.
+
+Anything strictly related to *SharedArrayBuffer* issues is then an orchestration *coincident* is handling, and to some extend also anything memory leak related could as well fall down to this module purpose and scope.
+
+In a nutshell, this project takes care of, and is responsible for, the following patterns:
+
+  * invoking something from a worker that refers the main thread somehow fails
+  * there is a reproducible and cross platform (browsers) memory leak to tackle
+  * some function invoke with some specific argument from a worker doesn't produce the expected result
+
+All these scenarios are unlikely to happen with *PyScript* project, as these are all battle tested and covered with such general purpose cross-env/realm oriented project way before landing in *PyScript*, but if you feel something is really off, leaking, or badly broken, please feel free to file an issue in this project and, once again, there is never a silly question about it so that, as long as you can provide any minimal reproducible issue, all questions and issues are more than welcome!
+
 ### The stack
 
 The stack describes how the different building blocks _inside_ a PyScript