There&#x27;s tutorials to manually or automatically derive parsers for whatever you can clearly define. LISP&#x27;s syntax makes this trivial. From there, you just need a few functions and tree operations for interpreting&#x2F;compiling. LISP is designed for tree operations with tutorials and code for those. From there, a GC and I&#x2F;O with many examples in papers and on the web with doc&#x27;s plus code. Additionally, there&#x27;s a ton of LISP&#x2F;Scheme interpreters to draw on.<p>Hard to imagine an easier one to interpret. Compiling isn&#x27;t that difficult if you target C as it basically takes two techniques. Takes a few more to target native and you don&#x27;t get that in 90 minutes like one Scheme-to-C compiler presentation.<p>What is your counter-example in terms of mainstream languages that&#x27;s easier to lex, parse, interpret, compile, or link than LISP? Or even as easy? Even Wirth&#x27;s languages are more complex and difficult to compile despite being brilliantly simple.