Why the Island’s Special
This is my first theory, and I know this is highly unlikely, but several of the Island’s mysterious properties seem to be consistent with what you may find near a magnetospheric eternally collapsing object (MECO). A MECO could greatly warp time and space, creating some of the Island’s odd properties. In addition, a MECO generates a huge electromagnetic field, which as we know the Island has, and the Swan was made to study it. So maybe, just maybe, the Island could be sitting on top of a MECO. The MECO could also exhibit peculiar behavior such as moving the Island through space, and mutating something via its EM field to create a healing virus. IDK, just an idea from a physics nerd.