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The guy at the Apple store was like: "I just close the lid, and that works fine for me. I also shut it down every 1 (or 2) weeks, to clear the RAM".
That makes sense, but it sounds like his personal experience. Is there anything official/unwritten law on what we should do when we are done with our Macs, at night for example.
I am a person that almost accesses the laptop (MacBook pro 15'' Retina) every day. It's brand new and I wish for a long-lasting relationship with it!