# Haskell Interlude 79: Peter Thiemann

**URL:** https://discourse.haskell.org/t/haskell-interlude-79-peter-thiemann/13840
**Category:** Links
**Created:** [March 24, 2026, 7:25am UTC](https://discourse.haskell.org/t/haskell-interlude-79-peter-thiemann/13840 "2026-03-24T07:25:39Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![sperber](https://avatars.discourse-cdn.com/v4/letter/s/59ef9b/32.png) [@sperber](https://discourse.haskell.org/u/sperber)
#### Post date: [March 24, 2026, 7:25am UTC](https://discourse.haskell.org/t/haskell-interlude-79-peter-thiemann/13840/1 "2026-03-24T07:25:39Z")

</div>

> **[Peter Thiemann](https://haskell.foundation/podcast/79/)**
>
> In this Interlude, we're joined by Peter Thiemann. Peter is a professor
> at the University of Freiburg, and he was doing functional programming
> right when Haskell got started. So naturally we asked him about the
> early days of Haskell, and how from the...

In this Interlude, we’re joined by Peter Thiemann. Peter is a professor at the University of Freiburg, and he was doing functional programming right when Haskell got started. So naturally we asked him about the early days of Haskell, and how from the start Peter pushed the envelope on what you could do with the type system and specifically with the type classes, from early web programming to program generation to session types. Come with us on a trip down memory lane!