Enlightenment, also known simply as E, is a compositing and stacking window manager for the X Window System.
If you try out 'enlightenment --help' then you will see a option as
Be psychotic. -i-really-know-what-i-am-doing-and-accept-full-responsibility-for-it
If you need this help, you don't need this option.
It is really difficult to choose the option. :D