Sunday, June 27, 2004
Or explaining what went wrong (think testing) via Rattlesnake
- Unknown unknowns: a five year old child does not know that he does not know calculus. For him or her, calculus is an `unknown unknown'.
- Known unknowns: an older child know he that he does not know calculus. For him or her, calculus is a `known unknown'.
- Unknown knowns: a high school student starts to study calculus. He or she does not yet understand calculus. For him or her, it is an `unknown known'. (You will note that the focus of the first `unknown' shifts here from lack of knowledge of the general to lack of knowledge of the specific.)
- Known knowns: after learning calculus, it becomes a `known known': it is both known to exist and understood.
- A part of life: after learning calculus and using every day, a person may forget how much he or she knows.
Links to this post:
Comments: Post a Comment