No you are mixing 'experience' with 'memory'. You create data or memory based on intelligence or experience. You make a theory based on intelligence. Memory just stores your experiences and data.
You are saying decisions are enacted from information and experiences stored in the memory. Then how that information or experience occurred or created in the first place?
For example, you can memorize Newton's third law as 'for every action, there is an equal and opposite reaction.' Your memory will only store this information. But can your memory tell 'where/how/when/what this means or works or applies? no. Here, your memory will not tell you, it works only on a certain reference frame or anything or on what conditions it won't work. Your thinking or applicability comes. Then again you store the new information in your memory based on your 'experience' or 'research'.
You make theories based on what you think about what is stored in your memory. If you don't have intelligence, no amount of information that you store in your brain helps.
All Vegapunk had is instead of library of books, he has 1000TB harddrive in his brain.