All invention begins as an idea, that has not yet been proven to be real. If we had no faith, nobody would not be able to get beyond that which we can see with our senses to invent the unknown we cannot see.
If I said, I would like to build a new style house, and the building committee had no faith, they would not believe this is possible, until they see the new house with their eyes. But since they can't see it now, they would not give me a permit to starting building, because they lack faith and can't see it. Faith can see what has not yet become manifest.
Say you had no faith in the unseen, one can still become educated by reading and studying ideas and works, that had been generated in the past by those with faith. Now they have become part of reality, so those without faith can see it with their eyes. But anything beyond that would be taboo since it cannot be seen. Those with faith will ignore this taboo, and will work with faith, to provide new things which cannot be seen today, so the faithless of tomorrow can see a little bit more.
Faith in god was the original abstraction that separated from sensory reality. This skill of faith in the unproven, became a template on which all invention and departure from the status quo would be based. When Columbus sailed west, he had faith in the unknown. It was not proven to be real and the status quo assumed you would fall off the edge of the world. Once he proved his premise, now the faithless could see and were ready to sail west to seek fortunes. This took faith in the unknown called fortune.
The faithful have been carrying the water for the faithless since the beginning of civilization. The faithful often get beat down, which is why faith in God was such a good exercise, since the fear of God helped to create a determination against faithlessness. Faith in God is like the asymptote of faith, with invention based faith closer to the zero point. You practice at the limit and the closer is easy.