Jason DaSilva said after he developed multiple sclerosis about 10 years ago, getting out got more complicated. “There were times that I was finding it impossible just to go out and meet a friend at a bar, or have a date,” he said, speaking in his apartment in Queens, New York. It was hard to figure out where his wheelchair would fit, how many stairs there were, whether there was a bathroom he could use. Sometimes even a phone call ahead couldn’t clarify all his questions.