Haskell is a \textbf{functional}, \textbf{pure}, \textbf{lazy} and \textbf{statically typed} high-level programming language. \vspace{\baselineskip} \pause \\ A few of the following facts will be white lies. But let's not worry about that. It's maybe more about "how to think in terms of haskell?" than "what is haskell?".