The tele screen couldn't see him in that position in the book.
It is by listening and evaluating the speaker's questions and responses. When the speaker asks a question, he is surely making a point to the audience through his responses. By that kind of communication, the speaker should have given his purpose to the audiences.
A person using an electric scooter may not be refused a ride if the scoots fits the ADA defineed evelope for securement. The statement given is true because, the ADA defined envelope for securement has only rules for the three wheel or more electric devices.