Reading words

My daughter is in Kindergarten and they have what they call "sight words". The idea is they should know the word by sight and understand the subject of the word without having to read the word. The goal is not to memorize every word in the language but to teach them to just understand the subject of the word.
As you are reading this sentence you almost certainly aren't going to fully read each word. You just understand what the words mean with the slightest glance. If you are driving past a sign that says "fogs ahead" it will only take a fraction of a second to "see" the words and your brain extracts the meaning without you focusing on the actual words.reddit.com