I remember when I was a wee lad and wanted to optimise the free space on my windows 95 computer. I deleted program files and everything in the windows directory to free up some space on my 1.2GB Hard Disk. The pc, ofcourse, stopped booting (in hindsight it was weird that I could delete system files on a running machine, but in some ways Win95 gave a lot more power to the user I suppose).

I sense that this is the level analysis that is going into these “cuts” and “optimisations”.