Some of our key accessibility ideas are back to front. The most important aspect of the accessibility of images isn't 'alt-text'. The number of disabled people who use assistive technologies is tiny compared with those who don't. And for many people video is more accessible than text, not less accessible. In this CSUN 2014 talk, Professor Jonathan Hassell exposes 16 foundational things that all advocates “know” about accessibility as myths, using real user-research to show how they need to be replaced to properly serve today’s tablet and mobile-obsessed disabled and older users.