Sensory cortex plays the role of input processor for knowledge transfer and this is the dorsal root of learning mechanism. Motor cortex is the ventral root of knowledge transfer that describes the role of output processor. The association of these two roots provides permanent present tense for the working mechanism of brain. The third part of learning mechanism is temporal cortex which is known as the lateral root of knowledge transfer. It has two processors – memory processor and limbic processor. Memory consolidation presents the life of past tense while emotion processing reflects the pathways of future drives.