Please do not delete the link, which i have just updated. Mr. Theodoropoulos's work *is* based upon science, unlike the non-science of invasion biology. i would strongly recommend reading his book on the subject, which is the first link on his page. science is based on logic, not emotion. read his book, and you'll understand why *your* response to his writings is the problem - it's a non-scientific response. it is fully appropriate within the context of wikipedia for this article to reference sites and authors who maintain a contrary position on the matter. so there's no misunderstanding, Mr. Theodoropoulos is my brother, not me. am i biased? yes - i don't particularly like my brother at all. but his work is of merit.