Brain Myths: How Much of Our Brain Do We Use?

Question: "I have been told that we only use 10% of our brain's capacity. Not sure all the reasons why we cannot access the other 90%. I want to. I wouldn't mind having a better memory!" Answer: There are differing opinions on this. Some say it's true and it's the result of a built-in redundancy. Not available until something goes wrong. I personally am in the "I don't think so" school and there are a number of lines to evidence to support me on this.