Mechanically, the shooter must be made aware of how the pointing of the sights on the weapon function. You will be cutting in half the center of mass of whatever you are shooting. If you are unsure of your target or other related dangers that come about as a result of discharging, then we are to be held to a higher standard, and should refrain from engagement.
I know that I have a picture in my mind of my perfect business model. The way I present listing information to a prospective seller. Not to mention the way that I speak with first time buyers. I have already envisioned myself in the particular scenario, responding to questions and objections. Knowing how I am going to respond, what body language I am going to use, the tone, volume, inflections, pauses and the lot, is extremely reassuring during the presentation.
This does not stop with clients alone, this covers all aspects of my life, my "sight" picture has already occurred in the theatre of my mind, all I have to do now is experience it in real time.
When someone tells you that it cannot be done, or that you do not have the skills or know-how to produce something, it is time to walk away. You can and will succeed. Imagine if you were at a full out sprint at the picture you have envisioned, dreamt, and fantasized about. Your heart is racing and your feet and arms are pumping like gangbusters.
Then for a moment, just a moment, you look over your shoulder at the past. YOU WILL FALL. Looking at the past only distracts from the "now". Babe Ruth was once asked how he was so fantastic at hitting home runs, he responded that he had a good for-getter.
I pray for the day that my minds own limitations are not able to stop me from my "sight picture".