There is a rule when you are assembling LEGO: LEGO is always right. And still, we have the doubt: what if they forgot to put the piece? Come on; we have so many assembled things (laptops, TVs, gaming consoles, smartphones) and not doubting, but if it is in disassembled state, we for some reason give the doubt that the machine will miss the piece. And now I am wondering how many electronics I owned in my life that was missing a screw or resistor.