How to sell electric lights to blind people living alone?

The pitch is as follows:

It’s dark at night and your property and safety are at risk if the bad guys think your home is empty.

When guests come to your home, you need to use electric lights to illuminate the guests.

Our lamp has a voice control function and is specially designed for blind people, making it convenient for you to light the lamp.

Supplement

Blind people refer to people with visual impairments. Visually impaired people are mainly divided into two categories, including total blindness and partial blindness. Total blindness (ie, eyeball atrophy or calcification), loss of response to light. The second is amblyopia (less than 60% of normal vision). The activities of blind people will be limited due to visual impairment.

In Hong Kong, a more respectful term is generally used in writing and is called visually impaired or blind. Compared with visually impaired people, people with no visual impairment are called sighted people, open-eyed people, and healthy-sighted people.

Definition

A blind person is a person who suffers from disease or accidental injury to the optic nerve or eyes, resulting in blindness in both eyes or in one eye. There are congenital blind people and acquired blind people; there are also blind people. "See" function.

Since a congenitally blind person has never experienced any color, he does not have any concept of color, and there is no "seeing". As for the visual part of his brain (if there is still If it is a personal experience (such as neural stimulation), it is different from the visual experience (concept) of a normal person and cannot be confused. For him there is no "seeing" of color, not even "seeing".

For the acquired blind person, because he has experienced color, of course he has the concept of color. Although he cannot "see" (referring to obtaining visual information from the usual visual channels), as long as the visual part of his brain is still normal, he will have a sense of color under certain stimuli.

Generally speaking, since there is no visual information from the usual visual channels, it is a bit like not receiving any light, then his visual sensation is a bit like being in the dark - "seeing" (feeling) to) black. But if the visual part of his brain (if it is not damaged) receives some kind of stimulation that gives him a sense of vision, then he will have some sense of color - "see" (feel) color.

Therefore, the statement that "blind people live in a dark world" is not completely scientifically appropriate. It can only be said that it is a kind of sympathetic psychology of people.

Famous blind people include: the internationally famous blind singer "Ray Charles", Chinese folk artist A Bing (author of Er Quan Ying Yue), American writers Laura and Helen Keller, etc.