Seek Opportunities not Problems. If resources are provided with no responsibility or accountability. Any accountability for any other result is lost. Condense the most important knowledge which we possess into a four year cram course for the next generation. A dialog between the student and a teacher who cares.
Data is bits and bytes.
Extra bits and bytes are added to make sure that the information coded in the data message arrives at the destination intact, ie. Claude Shannon quantified the measure of information which could be transmitted through a communication channel. His basic measure of information he defined to be a Bit. Binary Information Transmitted. He was dealing with the problem of error rate in the channel.