@Dan_Ramos @chanon
I'm no longer an Apple user I used to be, but I suppose little has changed: there are of course a few tricks to keep the laptop running even without tinkering with OS — closing the lid, then using connected USB device to wake it being the obvious one. Another aspect of it is cooling — of course you may leave it closed, but if your designated workload makes it run hot it's just safer to keep it open.
@DeveloperMemes