Sharp edged words. High performance code only exists when you've developed experience from building low performance code. I think a few explanatory notes and d

Sharp edged words. High performance code only exists when you've developed experience from building low performance code. I think a few explanatory notes and discussion of suitable alternative approaches is warranted but not a complete rewrite because its somehow wrong. Each VM has its own quirks which produce their own opportunities. Why would this one be any different? Especially as a teaching instrument where it has to be simpler / clearer than a production codebase?