This woman is an optometrist.
Assumedly, this woman has been through 13 years of education up to high school and 4 years of college, including a year each of chemistry, organic chemistry, biology, higher math, and physics.
This woman has been to optometry school for 4 years and certified to practice optometry.
Assumedly, patients come to her office in the interest of vision health, vision correction, and early detection and prevention of eye diseases. They entrust their ability to see to her.
How did this happen?
If you understood this the first time, go back and listen to it again.
PS: Does this remind you of any descriptions you may have heard about wine?
Discovered on Pharyngula, a worthwhile science/evolution defending blog.