Sheehan - the ufo phenomena appears to be extradimensional which I think to be a function of how they travel and move and it and it gives the appearance of being extradimensional by being able to appear and disappear (hivelink)
If scale or size changing technology is central to the aliens moving and hiding, then perhaps moisture and water create challenging mediums for movement of tiny crafts.
(hivelink)- This might help explain why Jinn, a seemingly interdimensional being with free will acknowledged in Islamic teachings are hurt by water and generally prefer very dry climates. tid:4921 (0) (hivelink)
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