引用 作者: Kofu

以下是他講的~~(我當時在上課沒辦法跟他聊到很細部的)
Timduru: As for the eyes, well they work by illusion. the glass part of the eye is slightly convex, your mind thinks the pupil is on it. While in fact the black of the eye is about 1-2 cm deep in the head under the outside glass part.

If positionned well depending on the eye size and shape, you get the illusion that the pupil is following you.

所以呢~
所以你上課是在偷用MSN上線沒有在專心上課厚....