How do you live without a cellphone in today’s life?

I have a friend that does not have a cellphone, to add to that he does not have a house phone, so they have no way of contacting people besides at their job. I have asked my friend why they don’t get a cellphone but they never gave my an answer. So, I wanted to know if their were other people that live their lives without any communication devices or do people feel the same as me and need a way to communicate with others.

Why is that technology improves over time?

I know this might sound like a stupid question but i’ve always wondered why we have more technology now than they did in the past like the 1800’s and how people in the 1800’s have more technology than people in the 1600’s. And people in the year 2050 or 3000 would have more technology than us.

Why is it like that. When I was younger I use to just think that humans just get smarter over time but now I know it’s not the case.