What are your arguments for and against the computer, the car

What are your arguments for and against the computer, the car and the phone? Work in a group of three persons (one piece of technology for a person). Make your lists of arguments, (giving arguments)
Discuss your arguments with other groupmates. Let them agree or disagree with you. (agreeing/disagreeing)
Agreement
Thats right. I also think so. I must agree that ... You are quite right.
Disagreement
On the contrary, it is ... I think its absolutely wrong to ... On the one hand ... , but on the other hand ... Dont forget about the other side of the problem. You dont seem to understand that ... I think youre being rather optimistic/unrealistic saying that