<human>: Question: What subject did Avicenna start studying at 16?
Answer: The teenager achieved full status as a qualified physician at age 18, and found that "Medicine is no hard and thorny science, like mathematics and metaphysics, so I soon made great progress; I became an excellent doctor and began to treat patients, using approved remedies."
 Is the question answered in a satisfactory fashion?

OPTIONS:
- yes
- no
<bot>: no