> For example an Erlang or Haskell programmer can't do anything about memory layout anyway No, but we can make algorithms that will do things in other ways tha

> For example an Erlang or Haskell programmer can't do anything about memory layout anyway No, but we can make algorithms that will do things in other ways than standard. Knowing memory layout and behaviour enables programmer to invent better ways to do things. Of course those algorithms are very application specific, but at least it increases solution space. Erlangers mantra here is "profile this" so that you know which one is actually better.