Sure, it's a vague line. And it's hard already for juniors to have the confidence to make their own decisions or code in general. To have them also fear failure is even worse with everybody fixated on not making any mistakes. But as a constant failurer myself, I don't view falling on your ass all the time as that great of a thing that you should be so careless to let it continuously happen. You have to try your best and be focused, otherwise you'll always half-ass things without learning the right mindset so to speak.