Some people can remember more than many others. There is a significant difference in the storage capacity of people in their brains. Is there any estimation to this capacity?
B.K. That's an interesting question, but is one that is currently impossible to give an answer to. The temptation is to compare the brain to a digital storage device; however, in reality the brain works nothing like a computer and stores information in a completely different manner.
For example, while information in a computer is stored in individual bytes, information in the brain is not stored in individual neurons. Rather, neurons can make 10s of thousands of connections with other neurons, and these neurons all work to together in forming and storing information about our lives. Thus the storage capacity is exponentially larger than it would be if information could only be stored at the individual neuron level.
In addition, it is not possible to measure how much space a memory uses. Thus, while there have been estimates of the brains storage capacity that range from 1 terabyte to 2.5-thousand terabytes, these are just guesses and no one really knows for sure.