In this question and reading about the ontological argument elsewhere I have discovered that there is (and has been) a lot of discussion about it, and that it was taken very seriously.
Can someone explain to me how thinking about something perfect (or being able to conceive it) must mean that it exists?
(This is obviously a non sequitur in my opinion, even if existence is a perfection; why should me thinking about something perfect make that thing exist? But, if that were the case, I expect the argument to never be taken seriously in the first place.)
How can this argument that "thinking about a perfect being means that it has to exist" have been taken so seriously for so many years (instead of being dismissed right away)?
I expect to be misunderstanding something or lacking the necessary knowledge, so I would also welcome any pointers to the necessary knowledge I'm lacking.