The big thing is not even that, the big thing is that you can seperate your logic from the data that you want to process. So instead of (map inc [1 2 3 4]) you

The big thing is not even that, the big thing is that you can seperate your logic from the data that you want to process. So instead of (map inc [1 2 3 4]) you can do (def inc-transducer (map inc)) and then use that for any datastructures, channels or whatever other transducer context people come up with. To be sure, you would not do that with (map inc) but if you have more logic, you could.