At the time it was written, the "Mysterious Island" involved the use of futuristic technology to escape confinment, and then survive in an unknown land, the essence of what speculative fiction is.
It is easy to miss that from our current tech level.
Regards,
Kevin
Hmm, have read about a tenth of the books on the list. Although like you Mr Bowman I could have done without the repeated use of a phrase the compiler came up with themselves, and feels compelled to use at every opportunity.
But do have a couple of things I'm not sure of and would like to challenge the author on.
Firstly, (as one of the commenters has pointed out) is the complete omission of Assimov, the guy was/is considered to be one of the greatest SF writers of the 20th Century yet none of his work appears in this list (it's not as if you'd be hard pressed to find one to put in it).
Secondly, is the inclusion of The Mysterious Island, as there isn't anything in it which immediately strikes me as being SF. Personally I'd say it's far more comparable to a 19thC version of Robinson Crusoe (the only SF link to it is because it can be considered a spiritual sequel to 20,000 Leagues Under the Sea).