Have you ever had a conversation with yourself, one that took place inside your head? If so, you are one of many that have an inner monologue—or inner voice—that narrates your thoughts throughout the day. But did you know that many people have no such inner dialogue? While that might seem strange to some, it’s equally odd for someone who doesn’t have an inner monologue to imagine how that manifests itself.

The topic of inner speech has caused a stir on Twitter after the user KylePlantEmoji  put out his own observation on the matter. “Fun fact: some people have an internal narrative and some don’t,” he tweeted. “As in, some people’s thoughts are like sentences they ‘hear’, and some people just have abstract non-verbal thoughts, and have to consciously verbalize them And most people aren’t aware of the other type of person.”[…]

Read more: People Are Shocked to Discover Not Everyone Has an Inner Monologue