What do you do to learn new programming construct? What did you do to learn programming - didn't you write

  #include <stdio.h>

  int main() {

    printf("Hello World");
    return 0;
  }

The two don’t have to be mutually exclusive. You can let the agent code and you review it, or vice versa. No different from being a team lead where you don’t write all the code, or even review each and every line of code, but you have a very firm grasp of the code base.

-- me, two months ago