The independence of the judicial branch is ensured by the:

what he said above me         look up that's the answer

answer; people have no objective standard by which to judge themselves;

i believe the answer is: true

our brain need to reach a certain level of development   before it could interpret and understood sound with high difficulties. to proof this, we just need to pay attention in musical preference between children and adults. it is far less likely that children would enjoy things such as orchestra or rock band as much as adults due to the difference in this ability.