Conservatives do those things.
But when it comes to "only liberals invent smart phones, the Internet and Medical Technology", then we might be a little nearer the mark. After all, Republicans slash education and smear scientists.
Those who work in engineering (mostly conservatives) realize the limited value of a scientist when it comes to actually putting something in place that both works and is cost effective.
So what was your problem ?
Mostly conservatives work in engineering? You think so? That's hilarious. The conservatives on this board say a degree is "just a piece of paper". Do you know any engineers without a degree? Or who believe in "magical creation"? Or think the Grand Canyon was caused by "Noah's Flood"?
Why yes I do. A good friend of mine is a failure analysis engineer and a devout Catholic (I call him a papist for fun!) and while I am very liberal when it comes to individual rights I am also a fiscal conservative and have a PhD at the end of my name. So where does that leave your "theory"?