The metaphor of examining a house, perhaps for purchase, will help be explain this distinction. Imagine that you are considering a house purchase. The realtor’s goal is to introduce you to this house. You will drive up to the front of the property noting a few special characteristics of the house. You would enter the front door, and make your way slowly (but somewhat superficially) through the various rooms, noting wall surface, lighting and plumbing fixtures, furnishings and/or decorations, the attic, and the basement. You might take a casual stroll around the front and back yard. The entire visit might take no more than an hour, at best. If you are interested, you may return again to look more closely at particular aspects of the house. This approach to understanding is very much like an introduction to education approach: a