In order to make a decision utilizing a decision tree, you must:

start at the most distant point in time and work backwards to Time 0.

begin at Time 0 and work towards the most distant point in time.

start at the top of the tree and work vertically downward to the very bottom.

start at the middle of the tree and work both upwards and downwards simultaneously.

concentrate only on the limbs with the highest probability of occurrence levels.