The Virus, the Evolution, and the Creation
It seems for the most part, when someone says, "I have a virus", they are talking about a bad invader. Fact is, not all viruses are wicked things, since some are actually beneficial. You could even say, "I have a virus" without meaning something that made you sick, because we have virus variations inside us already. Influenza virus illustration from CDC.gov Imagine taking the train out of Galveston. Some of the passengers seem to have always been there, and even have their own duties. Then some bandits come along and not only rob the passengers of their money and jewelry (and my best pocket watch!), but they start changing things for their own destructive purposes. The passengers who look like they've always been there can be likened to endogenous retroviruses that have functions, and the bandits are like exogenous retroviruses that come along and wreak havoc. Endogenous retroviruses are essential for the development of the human placenta. Working f