Top 2 Very Interesting Questions with their Answers | Explained | Ahmedxi

 #1 

How Much Of Our Brain Do We Use?

Short Answer: 100%

Explanation: It has been misattributed to many people (including Albert Einstein) that we only use 10% of our brains. This myth was originated in the 1890s by the father of American psychology, William James. He said, “most of us do not meet our mental potential” and this misunderstanding stuck for a long time.

The truth is, we use virtually every part of the brain, and most of the part is active all the time. In fact, during sleep, all parts of your brain remain active. It is true that every part of the brain is not concurrently active at any given moment. For the maximum efficiency and in order to be conscious at all, 1 to 16% of the cell should be active. Furthermore, most of the cells are used to control unconscious activities such as heart rate, dreaming, etc.

The human brain requires 20% (more than any other organ) of the body’s energy; in children, that figure is 50%, and in infants, it is 60%. It contains more neurons (around 86 billion) than any other species, and this dense neuron packing is what makes us so smart.

#2 

Where Do Permanently Deleted Files Go In Computers?

Short Answer: Nowhere, it is still there.

Explanation: Do they just wiped out, do they go off somewhere where you can never get them back or do they send it to the President. Well, the answer is your computer doesn’t delete anything, they are right there in your hard disk.

When you delete a file, you just change a pointer to the new address on your hard disk. Pointers are a special type of data that points to the location (Track/Cylinder/Sector of the hard drive) where the actual file is stored. Large files are usually stored in multiple locations. When you open a file, the hard drive follows the pointer to present the data.

The file is never erased; it is present physically on your hard disk. But the address where the file is located is made available for the next read/write operation.

You can get those files back using special software unless the location has been overwritten. Although, overwriting doesn’t guarantee that your files are gone forever. Organized criminals in Ghana have managed to recover confidential data from dumped electronic wastes. So if you are working for any secret agency, it’s better to destroy your hard disk rather than throwing it away.