Does it measure up?

The following is from Teaching, No Greater Call, B: Basic Principles of Gospel Teaching–Use Effective Methods, 27: Choosing Effective Methods, page 92:

    For example, a young missionary was teaching an investigator about the need for the gospel to be restored to the earth. The investigator responded that his church had taught him many valuable truths and that it had always been good enough for his family. To help the investigator better understand the meaning of the Apostasy and the need for the Restoration, the missionary brought a yardstick to the next discussion. She explained that the stick was exactly one yard in length. If only a few inches were taken away, the remainder of the stick would still be useful for measuring certain distances, but it no longer would measure a complete yard. After the death of the Apostles, pieces of the truth were lost here and there. Changes crept into the doctrine when there was no prophet to speak for the Lord. Parts of the truth remained, and they were good, but they did not represent the fulness of the truth. For a church to be the Church of Jesus Christ, it must have all the truth He taught. Otherwise, it teaches only a small measure of what it should.