Thank you, I'll email you. Apple's Assistive Access is a good step in the right direction IMHO. Yet as you describe there's a very strange mismatch between the

Thank you, I'll email you. Apple's Assistive Access is a good step in the right direction IMHO. Yet as you describe there's a very strange mismatch between the software and actual users. Disability researchers who are advising me are 100% that accessibility software and hardware really must be be tried much more thoroughly with real world users in real world settings. And the researchers feel strongly that there's no one size fits all. The best approach (currently) that they want is a kit of open source pieces that the researchers can combine and also can tune, to try many more hypotheses quickly. It's a great area for FLOSS.