There are many things around us which we see and use everyday but we fail to notice anything strange about them. Let's take an example of the elevator, even though we hate it but still we use it everyday and press these button to make it work for you.
But, have you ever noticed those little dots on every elevator button under the numbers or letters? What's the hidden meaning behind them?
Let's find out.
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The credit of creating Braille writing system goes to Frenchman Louis Braille, who lost his eyesight at the age of 15.
Does your elevator buttons have these dots?