The amount of such threads I've read here and elsewhere strongly suggests to me than this isn't trolling. I think it's reasonable to conclude that people who claim to talk to God and hear back may actually be experiencing this (though with no actual God being involved).
Someone else mentioned rotating 3D shapes in their head, and I think this is a good point of reference. I have somewhat strong aphantasia. On this test image[0], I score 2, maybe 3 on a good day. I've managed 4 when tired. I showed that to my wife the other day and she says she does easy 6. That suddenly explained various arguments we had in the past, that boiled down to me requiring explicit presentation of something that she, as it turns out, was entirely capable of processing in her head.
Someone else mentioned rotating 3D shapes in their head, and I think this is a good point of reference. I have somewhat strong aphantasia. On this test image[0], I score 2, maybe 3 on a good day. I've managed 4 when tired. I showed that to my wife the other day and she says she does easy 6. That suddenly explained various arguments we had in the past, that boiled down to me requiring explicit presentation of something that she, as it turns out, was entirely capable of processing in her head.
People's minds are diverse.
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[0] - https://i.redd.it/uf5brm3to1e21.png