So s/he can get a better, accurate shot at their target.
They don't.
You have to have pin point aim. you MUST shoot bulls-eye through 30/30.
If you attempt to use your non-dominant eye, your dominant eye will continue to attempt to send an image to your brain, and you will wind up holding the firearm at an angle to the target.
sky
skin
The arrow does not travel straight, it travels in a parabolic curve from the bow string to the target. The action of gravity pulls the travelling arrow down, so that by the time it gets to the target it is lower than what you initially aimed for. If you aimed for the bullseye, then your arrow may hit lower than the bullseye. Aim above the bulls eye--but not too high--you will hit the bullseye.
eye
Because after you shoot gravity will start to pull it down. So if you aim at the bulls eye it'll hit bellow it.
The Orbicularis oculi muscle squints the eye.
The London Eye is open from 10:00 am and closes at 8.00 pm.
Yes, but it closes early on Sundays.
Orbicularis oculi muscle