ELI5 Dyslexia - does it exist in all languages?

How common is dyslexia? How does dyslexia work? Is it genetic or environmental? Who are the famous dyslexics? Are you dyslexic in all languages? Why is the font Comic Sans notable for people with dyslexia? ... we explain like I'm five Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: blitzwolf, -monarch, fl-etchersketch, ezferns, firestorm8880, faaizk and plebdog To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter: https://www.twitter.com/eli5ThePodcast/ or send us an e-mail: [email protected]