Answering the question as to why there are Science Protocols that exist for a reason, 2 of 429 has become beloved member of the crew of the USS Alan Turing.  A fusion of Borg technology and a Tribble, the ball of chaos came to be during a late night experiment of "what if".  Genetically modified to NEVER self replicate, 2 is considered a vital part of both crew morale and a valuable asset as a "tactical assault tribble".