When Carl Benz made the first German car, it was still against the law to drive one, there were no petrol stations, and there were no proper roads.
When Johannes Gutenberg invented the mechanical moveable-type press, there were no bookstores, and no one knew how to read.
So what did these men see that everyone else missed? What world did they imagine that others thought impossible?
Driving a car, or reading a book, feels banal today, but at some point in history these ideas were outrageous.
And perhaps, a few hundred years from now, when there is a thriving colony on Mars, they’ll look back on our time like we look back on Benz and Gutenberg.
For that to happen, it requires people to take action when it makes no sense.