I fully understand but it appears to be nothing more than a gimmick. As an owner of a GS 7 Edge (and previously a GS 6 Edge) I find these things gimmicky. While they look cool and offer minor advantages (for example the edge screen displays the time so I can look at it while laying on the couch and see what time it is) but result in annoyances which, IMO, outweigh the positives. I've never seen any really good use for the Edge display but the appearance of the phone resulted in Samsung doing away with their non-Edge phones this last time around. I see something similar happening with the notch.
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The difference is the bezel doesn't interfere with full screen content like the notch does. The solution to the notch is that full screen applications, those which would benefit the most from a larger screen, are going to scale up to the bottom of the notch creating a virtual bezel.