Right now, that&#x27;s truer than many would like. However, when GHC 8 (the new version of the compiler) drops in the next couple months, most of the performance tuning will involve putting a single line of code at the top of each performance-critical file. That line will make all evaluation within the file strict instead of lazy.<p>A lot of the performance and predictability problems in Haskell come from its laziness, so the ability to toggle that on and off on a per-module (read: per-file) basis will be a game changer.