Overloading the learner with examples from multiple languages is also a bad teaching method. It just adds to the confusion and complexity. They will be overwhel

Overloading the learner with examples from multiple languages is also a bad teaching method. It just adds to the confusion and complexity. They will be overwhelmed with the different techniques needed to bolt functional programming on to various degrees in C#, JavaScript, Rust, etc. When teaching, it's much better to teach as little as possible at a time, so that learners can absorb concepts easily through their working memory and then build on their knowledge over time.