Have You Ever Wondered?

Have you ever wondered how people figured out math equations? How they created them? How scientific advancements were discovered? How did people perform math without calculators? How could people understand anything?
Maybe people today aren't as smart as people were centuries ago. Today, most people can look anything up on the internet or do their homework on the calculator. Centuries ago everything was done by hand. These were new explorations; there was no one to check your work with. Everything was discovered on hunches and random theories to explain the world and how it works.
Since so much is already discovered and the things we discover today are just mainly improvements, then what does this mean for our society today? Is the human race gradually becoming dumber? Are we subconciously making ourselves dumb?
Today, in class, people would ask the dumbest questions (and when teachers say there are no dumb questions--they are lying), like "Where's Dutch?" For the record, there is no country called Dutch. The country is the Netherlands. Some people don't know that New England is not in Europe...And I wonder how people passed grade school. (I'm not trying to say you are dumb; more the opposite actually. The average person does not know these answers, so what my point is, is that the term 'average' could, in fact, be decreasing in meaning)
In today's society everything is done for us. We don't have to memorize anything, and if we forget something, we just have to look it back up on the internet. Humans today are so lazy, that I wouldn't be surprised if everything was done through technical advancements. Meaning, people just sit around and have computers do everything for us.
I know that the English language is butchered every day, and I know I do it too. Using 'like' and 'umm' between everything thought. No body knows how to write or type proper English anymore. No one can do anything for themselves in today's world. So is it possible that everything our ancestors have worked for, stood for, died for, be deteriorating? Is the civilization of our world dying?