Boundaries of mind

Mind is capable of thinking anything. But why dont all human minds think everything?

Minds thinking ability is limited by one person's principles of life. For some, killing is a very big crime. His mind wont go to that point. For some, the mind will go to the extent of cutting one's body into pieces.
Say, if a child is brought up by saying things like "If you do this, you will be punished! God will come and punish you in sleep! etc etc", it develops some kind of fear for punishment. If the child's questions are unanswered, it will mostly stop ask questions. In these cases, the level of thinking is limited by fear or by boredom. It can be a variety of such external and internal factors.

Mind needs different things to get engaged. If you dont give it, it either can sink into boredom or it can also jump high to extreme thoughts.

So when does some extreme thoughts come? From my experience, extreme thinking comes to those who have enjoyed lot of freedom. Unobstructed thoughts, both constructive and destructive can come to such people who work by logical reasoning rather than just following some "laid-down" principles. Scientists and great discoverers and inventors are people who think beyond boundaries. Who have basically no boundaries for their thoughts. Thats how some new invention is taking place. "Something new"!
And extremists/terrorists are also like that. They also do not have boundaries in their thoughts. But their thoughts are destructive. it invents different new ways for attacking and destroying things!

So, for making the mind to do its best, it needs freedom! It becomes highly creative when given full freedom. But channelizing the minds energy into something constructive is the main point.