Back in 1948, Claude E. Shannon published a groundbreaking paper entitled, "A Mathematical Theory of Communication." This paper is viewed as the foundation for the development of electronic computers and the transmission of information over electronic circuits. However, there are many of the concepts in that first paper and in the subsequent development of information theory that relate directly to the creation of an online family tree, particularly of the type implemented on the FamilySearch.org website known as the "Family Tree." The concepts of the general theory of the transmission of information can be applied to genealogy by analogy.
Here is a schematic diagram of a general communication system:
Looking at genealogy in this way emphasizes the importance of careful and documented information. This goes back to the early saying about computer programming: garbage in -- garbage out. Here is a good example.