Words of Mormon 1:5
Wherefore, I chose these things, to finish my record upon them, which remainder of my record I shall take from the plates of Nephi; and I cannot write the hundredth part of the things of my people.
He could not write a hundredth part. So if we divided up the things of his people into one hundred parts we wouldn't even have one of them. Less than 1 percent. I've heard something similar in a lot of other scriptures. (3 Nephi 26:6) (3 Nephi 5:8) (Jacob 3:13) (Ether 15:33) (Helaman 3:14) (Alma 13:31) (2 Nephi 31:1) (Jacob 4:1) (2 Nephi 33:1). I guess they are trying to convey that we know very little of what actually went on. So what they did record must have been chosen very carefully. We have so very precious little information about these folks. Jacob said it was just plain old difficult to engrave onto metal plates. Given the repeated statements about not recording very much I think it would impose upon those authors something we deal with hardly at all in our day. They had to do more than prioritize. We can record things with so little effort we put no thought into what we write. Social media has proven this.
I wonder if or how many time Mormon wondered to himself if he should include or not include various things he came across. We learn that his efforts were very guided by the Holy Spirit and he made it according to the knowledge God gave him (W of M 1:7,9). The knowledge God gave him, not man. He got knowledge directly from God. I think therefore what we have is very important. Those who spend their time trying to disprove the book of Mormon or trying to prove it, or trying to show that is a fraud or whatever.....they are never going to get a dang thing out of it. I think the author's would be more pleased if we experienced and gained the same knowledge they had rather than get involved in debates that don't lead to further light or knowledge (Alma 13:12).
He calls it "my record". What is your record? Whats on it? Has the Holy Spirit prompted you what to include? God is at work in all of our lives. We should come to see it and rejoice in it. Is your record looked up and read by those of another Sphere? (Doctrine and Covenants 62:3) (Moroni 7:3).