u/HandofWarriner

My top three are glass, steam, and electricity.

I'm a middle school teacher working on some history content, and I got to thinking about important turning points in science and technology. I began by thinking about the huge importance that something like glass has had to the development of science. Most people, I dare say, think of technology as big, complicated machines, but think of all the things that glass became absolutely vital for between the 1400's and the 1900s. It coincides nicely with the Scientific Revolution. Steam powered the first Industrial Revolution, and electricity powered the second Industrial Revolution and birthed the computer age.

So I'm just curious what your gut check top three would be?