How much brain

How much  brain do we need for make a better life for us? I see every day many failures, especially in these times .Our mentality is just like 2000 years ago. What is wrong here? Ordinary people are to blame? . Maybe big corporations or governments keep us at a minimum level of knowledge. They need disciplined workers, not someone who ask questions. Maybe is time for change something.  Ok, enough with the crap. Tomorrow we will go to ours jobs ( those who have ) to make more money for ours leaders.