Do you know how you create a 3D image in the brain?
You’ll be amazed at how integral your brain is when it comes to line choice. 

It’s this process that allows you to read words quickly and accurately even with letters missing.
Your brain is processing what it’s seeing at lightning speed and using what it has previously seen in the sentence,
the context, and its experience, to complete the word.

Armed with this 3D picture and further experience,
you can quickly make decisions about danger, speed, line, etc.

Looking up allows you to make these decisions with time to make adjustments. You’re safer, and riding faster.

Looking up/ahead allows you to anticipate and make better decisions.
Join a skills clinic to develop this skill.