The things that we use every day become such a huge part of our routines that we seldom notice their simplest features. However, look carefully and you may notice that your favorite items have been designed to do much more than you thought. For example, the little brushes by the side of an escalator are not for polishing your shoes but are actually an interesting safety feature.
from BrightSide RSS https://brightside.me/wonder-curiosities/15-everyday-things-that-have-a-hidden-purpose-659910/
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