When we learn something new and we repeat those actions, we create a memory. That memory allows us to repeat that same action with great precision and accuracy. Our brain takes note of a number of different factors and conditions , stores that information then generates it again whenever we need it to reproduce those same actions. For example, let's look at catching a ball. When learning how to catch a ball, our brain creates a memory that tells us how far to extend our hands, if we need to adjust the way in which we are standing etc. If it is the same ball, our brain already knows what to do in order to prepare us for catching it. If we continue to practice throwing and catching a ball, then our brain will take note of every possible factor that will enable us to catch that ball without even thinking about it or looking in the direction of the ball.
How Our Brain Remembers
Our brain plays an essential role in our everyday lives. If our brain does not tell us that something hurts, we never notice it. In the case of someone with a condition like Alzheimer's Disease, it is their inability to reproduce a memory that renders them unable to perform certain daily tasks. Their brain simply cannot generate the information that they once knew. For example, if they are writing a letter and their hand begins to shake, what do you think causes that? Normally our brain would know from memory that we have to keep our hands steady in order to write but in the case of this condition, our brain no longer has that information stored or it simply is too damaged to generate it.
This is why I say that practice makes memory instead of perfect. If we practice a task over and over, we get better at it each time. This also means that we can train our brain to do more than it is currently able to do. This makes it quite possible for us to multi-task in a real and practical way. We can juggle balls while solving Mathematical problems and we can perform three different tasks at a time. We just need to create the memory of it. Each time we practice doing these three things or any three tasks, our brain stores that information. The more we practice, the more our brain takes note of all that is happening in order to improve the way in which we do it the next time. It knows we are able to handle it. It is for this reason that we should not limit ourselves. We should start training our brain to not only do more but to think beyond what we already know, as well as create new information and ideas.