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I'm glad it interest you. There are still so much we can talk about when it comes to wall. And like you rightly said, the way each and everyone see or define wall matters. However, even those rightly erected walls (I mean, those done with good intentions) might still pose a problem later.

Your best bet is to exercise caution and be moderate as possible so our safe spots do not turn into a death trap.

Thanks @grace-p for taking time to read through!