While US politicians advocate building a wall on the border with Mexico, startups develop hoverbikes. In a few years all border walls might be obsolate because it's easy for everybody who wants to fly over them.
All sorts of other situations where walls or height is used to prevent certain area's to be inaccessible by human will also be affected.
In a few years all border walls might be obsolate because it's easy for everybody who wants to fly over them.
US - Canada border is unguarded. If you avoid roads, you can just walk over it, no hoverbike necessary. And yet, it doesn't strike me as "obsolete".
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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