Express trains run less often, make fewer stops, and if they're going where you're going, get you there faster.
The local train is, of course, the opposite.
Some people hop on the first train that comes. A local in the hand is worth the extra time, they say, because you're never quite sure when the express is going to get there.
On the other hand, there's a cost to investing in the thing that pays off in the long run.
Now that you see that, you're probably going to notice it in 100 areas of your life.
The local requires less commitment, feels less risky, doesn't demand a point of view. The express, on the other hand, always looks like a better idea after you've embraced it and gotten to where you meant to go.
Express or local?