That's what I saw on a poster at work today. It's supposed to motivate us to turn ideas into actions. Or whatever they meant for it to do. Point being - I think that motivational poster is wrong. I think ideas count, even if you don't make anything of it.
Take the Theory of Relativity. At the moment, it's still a theory [an idea] because until some super genius comes along, the results can not be produced multiple times with consistent results. That's why it's still an theory, whereas gravity is a law. It can be proved time after time, and produce the same results. If you drop something, it falls. Always. Therefore, gravity is a law. Relativity is a little bit more tricky, and not always consistent. Therefore, relativity is still a theory. An idea.
I think ideas are just as important, if not more important, than the actions that come about from them. Ideas are drawn in our minds using imagination and logic, and if they didn't happen, a lot of things in our lives wouldn't be the way they are now. The apple would have hit Isaac's head and he would have thought nothing of it.
Take sliced bread. Seems extremely mundane. What came before sliced bread ? Just a loaf of bread you had to cut yourself. Somewhere a long the track, someone had an idea and decided to make a machine that slices bread. We now have sliced bread at our finger tips whenever we please.
You can see how some small idea manifested into a great invention, but it wouldn't have never happened had someone not thought of it. Ideas count. They count oh so much in life. How can they not count ? Without ideas, human beings would not have become what we are today. We would have starved to death as primates.