crutches

Does new technology make our lives easier and allow us to progress or enable us to be less careful and less aware? If my car has a device which senses if another car is in my blind spot, does that me a safer driver, or just one who pays less attention to the cars around him because the computer/car does it for me? I mean, once I have a technology to rely on, why try? But can we look at improvements historically and see that they have improved us and allowed us to grow? Feel free to chime in with suggestions.