PERCEPTION

Perception – the act of understanding through our senses; the organization, identification, and interpretation of sensory information in order to understand the environment

I found a 90's phone that has a hashtag button on it, I thought Twitter invented hashtags? My mom was going through a box of her old stuff and she found one of those bulky phones that are from the 90's and it has a hashtag button!!! Like for real it has ( # ) on it!!! Like Twitter wasn't even invented yet so why did they need hashtag buttons???