"Training wheels may have been a bad analogy. My thoughts went back to my earliest attempts at cutting dovetails. A shop made guide was used to register my saw when cutting dovetails. It didn't work very well. Eventually it dawned on me learning to saw was a better way of making dovetail joints.
Bench hooks and shooting boards are definitely not "training wheels."
Miter boxes are not "training wheels" even though using mine did help me to learn to saw better.
jtk
"A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty."
- Sir Winston Churchill (1874-1965)