It's easy in the sense that all you have to do is get in the car and fire up the app. It's hard in that it requires long, monotonous hours to be fruitful, and constant vigilance to stay safe. San Francisco is a tough city to drive.
It did not yet boggle their minds that the insides of those things that fly also look like the insides of those that swim. They had yet to question why the bones of a fish could look like the bones of a kite. They had not known to wonder how far to look back in history for the connection.