Brain is an organ that can be trained and developed. As you train with a “Brain Booster“, you become a more observant person - that is, you percieve and observe more.

When practicing tasks that demand simultaneous attention of all the senses repeatedly, neurons that are used in such activities form stable neural networks. Hereafter, these parts of the cortex react to the external stimuli much faster.
The same principles apply to the process of training to acquire different skills, be it driving a car, mastering martial arts or learning speed reading.
Intelligence agencies use similar techniques to train operatives, because they have to focus on many different tasks simultaneously.