cross-post linking to SIGPLAN Rust post

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+---
+title: 'What Type Soundness Theorem Do You Really Want to Prove?'
+categories: rust research
+---
+
+My advisor Derek and some of my coauthors Amin, Robbert and Lars just put out a blog post on the [SIGPLAN blog](https://blog.sigplan.org/) on the idea of "semantic typing".
+This is the methodology behind [RustBelt](https://plv.mpi-sws.org/rustbelt/popl18/), so the post is a great starting point for understanding the context of that paper and the key bits of prior research that it rests on.
+In fact they used Rust as their main example language for that post, and I helped them out a bit with some of the technical details there so they kindly added me to the author list.
+
+The approach they describe is much more widely applicable than Rust though; it provides a whole new perspective on type systems that I think deserves way more attention than it gets.
+If you are interested in formal methods for type systems and in particular for Rust, you should check it out!
+It's a great read:
+
+> ["What Type Soundness Theorem Do You Really Want to Prove?" on *PL Perspectives*](https://blog.sigplan.org/2019/10/17/what-type-soundness-theorem-do-you-really-want-to-prove/)