One of the Lisp machines of the 80's required you to save your work and reload so it would load in its more compact form. This was the first little while until

One of the Lisp machines of the 80's required you to save your work and reload so it would load in its more compact form. This was the first little while until they built the GC for this machine. In a sane program without GC, you'll be freeing the memory when you don't need it any more, and your less talented colleagues will get it wrong.