Well, that’s funny, because I threw that out as about the least synesthetic example I got. It’s taken directly from mythology I’ve read/learned/was taught over the years. It’s a solid association, yes, but it didn’t originate with me. “The Wheel of the Year” is a tarot card, for pete’s sake. We speak of seasons and agriculture in terms of cycles, which is related to circles, particularly “turning” circles, hence the wheel. Seeing cyclical time as something more-or-less circular-shaped is a common feature of Western culture. Clocks are round, sundials are round. Even Stonehenge was built in a circle. Compasses are round, too, and are divided into the eight main compass points, which correspond to the eight major astrological and agricultural holidays.
For that matter, when thinking in terms of a series of events, rather than repeating cyclical time, I imagine it as a line – i.e. linear time. An event/milestone from three years ago is farther to the left than one from two months ago.
A song or a particular style of music might make me feel warm, or cold. Some songs have given me a brief shiver.
Green is associated with the smell of chlorophyll, which is where the after-rain smell comes from. I’ve known it to smell more golden-yellow-green after the rain if the weather is warmer.
All of which I think demonstrates that I have a highly creative mind which automatically uses metaphor, associative memory, and imagined visual/sensory information as a way of processing, understanding, and remembering information. So while I get how literally seeing colors that aren’t there is synesthesia, I don’t get how imagining/“knowing” them to be there is. Why in particular make the leap from a “creative mind” to “synesthesia”? My mental image of linear time is just as automatic – I’ve thought of it that way ever since I can remember, and most of the time I’m not even consciously aware that I’m mentally making hash marks on a timeline, unless I stop to think about it, simply because I’m paying attention to the conversation I’m having. But it’s still a creative adaptation, not a “my neurons got crossed” kind of thing, unless I totally miss my guess. I probably made that association as a child, as something that made linear time-related things easier to remember, and it became ingrained. Short of something like a functional MRI I don’t see why there’d be an assumption of synesthesia on anything like that. If I made up stories to amuse myself as a child about the letter A and her boyfriend B, I’d think that would get ingrained and become an automatic pattern of thinking pretty quickly too.
I certainly don’t think it’s bad to be highly imaginative (given that I am), but I also don’t think it’s the same thing as a neurological condition. I assume that most of you did not get a functional MRI done, so where are you drawing the line, and why?
I suppose the sound to pain to glass thing might be, but I only get pain / discomfort / nausea associations with a few types of sounds that are particularly annoying. It corresponds more to particular frequencies/pitches than volume, although loud volume at a bad pitch is worse than soft volume at a bad pitch.