For thinkers of that time, there was a vast unexplored green field infront of them, to plough and harvest. It's not hard to imagine ploughing skill of one field could help ploughing others too. My friend used to say, if you have quick enough reflexes to play table tennis, you can be good at other sports too.
I wonder if the people in 100 years will refer to the current time period (now) the same way as we sometimes do to about ~100 years ago. As in did the scientist and curious minds in the last century really have this golden period to just wander around in all these greenfields, whereas nowadays the fields are not so green anymore. Or is this just a normal phenomena of any time period?