An exaggeration, but I can see how you might feel that way. 90 degree phase shift networks have been used in audio matrix systems for 50 years (4-2-4 quad, Dolby Stereo, etc.) I'm sure you can figure out how to do it. Well, this is interesting! I went back to look for examples where you have declared yourself right and anyone else who doesn't agree is an idiot (or words to that effect), claimed that 98% of all recorded stereo music benefits from cross-feed, and if anyone doesn't agree they're spatially deaf (or worse). It looks like the thread has been "cleaned up" just a tad, large groups of posts are now gone, others edited. But I do have all the originals in email notifications. I guess citing all those many occurrences would not benefit the thread and would just get deleted again. I can forward all of them to you privately if you like. I'm not the one proclaiming superiority of concept, intelligence or hearing ability. Oh look! There's an example now! ...and you don't see what I mean from the above? I highlighted a few things to help you out. The red one, in particular, keeps coming up again and again. People's preferences make them ignorant, spatially or otherwise. You've sensed pretty much everything incorrectly about me, so why not just add that one to the growing list? And THAT from the same one who denies that choices in stereo perspective in headphones could possibly be artistic intent! Back to the deleted posts (about a month's worth) and edits for a second, I really have no issue with that, but it does indicate something. It has become quite clear that what little educational benefit this thread might have once had has been obliterated by intense propaganda promoting a polarized, but scientifically unproven viewpoint. I recall a time in the not too distant past on this forum when threads would have been locked for less. If education is at all important, perhaps a return to the actual scientific method in the sound science forum should be considered rather than foot stamping, and the synthesis of terminology, statistics, and pseudofacts.