Limited contact between the first British Sign Language communities created dialects that are still in use today.
The latest proposed cuts to deaf education services just fuel the deaf community's mistrust of the 'hearing' authorities that wield the axe.
Three Oscar-nominated films prominently featured characters using sign languages. It's an important contribution to recognising Deaf culture and identity.
Think it's stressful visiting a police station? Try doing it when you can't hear.