A nokton is an object that has a position, an pulse and a charge. Position and pulse are variable, the charge is fixed.
A nokton during its movement can follow the path indicated in image (from 1 to 5). We suppose the nokton in position 1, it will move towards position 2. This displacement is not 100% certain (probability = 1) but it has a certain probability. This probability is exactly given by the value of the pulse. Thus the probability that the nokton follows path 1 to 5 is equal to the products of the pulses in the different directions. However, the pulses are also variable. Then we need to do the reverse. Fix a path then calculate the different impulses (probabilities) then make the product. So we will have the probability of this path.
Click to view image : http://hpics.li/cba23a7