Connect-Extend-Challenge Part 2!!!

This is an extension to my previous post, 'Connect-Extend-Challenge'. I would like to expand my thinking. As you saw below, I was wondering how we evolved all the way from 10000 years ago, where there was barely any technology, to now, where most people would have trouble surviving without it.
How did this evolution occur? After doing a project on Homo erectus, I guess it is safe to conclude that as time has past, mistakes would happen and a new things would be discovered. For example, look at fire. It is technically a form of technology. Homo erectus confronted natural fires and would have noticed its warmth. He would have possibly preserved it and stayed close to it when he was cold. He would also use fire to cook meat and keep away any predators.
Overtime the human brain has evolved and become somewhat more sophisticated. When this happened we received more advanced technology. For example, Thomas Edison creating the light bulb. In the future technology will advance even more and more and more...and more.
Now, is the advancement of technology making a positive, or negative impact? Well, I guess it depends on the way you look at it. For me, the fact that we now have things like light, cars, computers, air conditioning, etc., is helping develop the world in a positive way. Imagine life without these things. I know that for most people life would be much more difficult.
There are also times where I think that technology is making a negative impact. For instance, since there is technology like game boys and PSP's, we have actually created new diseases like diabetes type two. It is caused because we are not as healthy as the past generation.We sit at home and watch T.V. to pass the time, whereas our parents and grandparents would go outside and play tag for fun (as kids). Another negative impact is that we are literally destroying our environment. When you think about it, before technology we weren't really using up so many natural resources. Now our continents will literally be under water, just because people don't take the time to do simple things like turning the air conditioning and lights off before they leave a room. Don't get me wrong though, I know I would have a loooot of trouble surviving without technology.
That is my point of view anyways.
Thanks for listening!