Perhaps you had sub-consciously seen it posted elsewhere. (or, perhaps, you had the same thinking someone else had; I've had that happen many times where I could swear I invented something, and then find it was invented years ago, so I either totally thought of it on my own, or more likely, did come across it so quickly I didn't remember, and then thought I was the inventor)
Perhaps you had sub-consciously seen it posted elsewhere. (or, perhaps, you had the same thinking someone else had; I've had that happen many times where I could swear I invented something, and then find it was invented years ago, so I either totally thought of it on my own, or more likely, did come across it so quickly I didn't remember, and then thought I was the inventor)