Foundations in Microbiology 9th Edition by Kathleen Park Talaro, Barry Chess

Exercise 1

Critical thinking is the ability to reason and solve problems using facts and concepts. These question can be approached from a number of angles, and in most cases, they do not have a single correct answer.
Comment on the possible origin of viruses. Is it not curious that the human cell welcomes a virus in and hospitably removes its coat as if it were an old acquaintance?