This picture denotes how effective and engaged the class was. Don't misunderstand i'm just kidding.
This one, drawn at class time while it was very boring to sit there.
But the thing you may miss is that the picture goes inward through the paper drawn in the picture. Look again, Don't you see its going infinitely...well some errors due to precision of my pen, camera or your eye power may be present Don't take it seriously this only for fun.
Well i thing you don't forget to upvote my content.