Understanding is based on a stack of four elements, here in reverse:

• Data is just a collection of differentiable elements - such as zeros and ones. Computers store data. Data by itself is useless - an intelligent entity may be able to spot patterns in it, but without context, that is nothing.
• Information is data which is ordered and can be usefully processed. Computers process information.
• Knowledge is the purpose of information - it allows one to usefully do things. Humans have knowledge. Some would say that computers have very limited knowledge.
• Wisdom is the purpose of knowledge - it is not just the ability to do something, but the successful exploration of why. Humans strive towards wisdom.

Arts students like to believe they are learning wisdom and that other disciplines are just learning knowledge. Whether the average Arts graduate is rich in wisdom is left as a judgement to the reader.