How to use a small smart home? Is it useless to have an old man at home?

Small smart home is very simple to use, and there are old people at home, who usually use it more than me! Small smart home is different from traditional household appliances. Traditional household appliances are all manual switches, and smart homes are mainly controlled by voice control systems. It doesn't matter if you can't read. When it is necessary to turn on or turn off a household appliance, you can turn on or turn off the household appliance (the name of the appliance) just by shouting. Simple and convenient, it is easy for the elderly to get started.