Of course title is a bit of a clickbait, because they are comparing walls of same strength, not single row straight walls with curved walls. But how does this

Of course title is a bit of a clickbait, because they are comparing walls of same strength, not single row straight walls with curved walls. But how does this compare with a straight wall with brick columns every two meters or so? My guess this is the best compromise, and maybe that is the best compromise, as it uses about the same number of bricks as a curves wall, but the area wasted is much smaller.