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 <!-- ALL-CONTRIBUTORS-BADGE:END -->
 JAX-powered Cosmological Particle-Mesh N-body Solver
 
--> This project is currently in an early design phased. All inputs are welcome on the [design document](https://github.com/DifferentiableUniverseInitiative/JaxPM/blob/main/design.md)
+**This project is currently in an early design phased. All inputs are welcome on the [design document](https://github.com/DifferentiableUniverseInitiative/JaxPM/blob/main/design.md)**
 
+Current expectations:
+- This project is and will remain open source, and usable without any restrictions for any purposes
+- Will be a simple publication on [The Journal of Open Source Software](https://joss.theoj.org/)
+- Everyone is welcome to contribute, and can join the JOSS publication (until it is submitted to the journal).
+- Anyone (including main contributors) can use this code as a framework to build and publish their own applications, with no expectation that they *need* to extend authorship to all jaxpm developers.
+
+## Goals
+
+Provide a modern infrastructure to support differentiable PM N-body simulations using JAX:
+- Keep implementation simple and readable, in pure NumPy API
+- Transparent distribution using builtin `xmap`
+- Any order forward and backward automatic differentiation
+- Support automated batching using `vmap`
+- Compatibility with external optimizer libraries like `optax`
 
 
 ## Contributors ✨