Alma 10:5 Nevertheless, after all this, I never have known much of the ways of the Lord, and his mysteries and marvelous power. I said I never had known much of these things; but behold, I mistake, for I have seen much of his mysteries and his marvelous power; yea, even in the preservation of the lives of this people.
Alma 46:40 And there were some who died with fevers, which at some seasons of the year were very frequent in the land—but not so much so with fevers, because of the excellent qualities of the many plants and roots which God had prepared to remove the cause of diseases, to which men were subject by the nature of the climate—
Alma 49:2 And behold, the city had been rebuilt, and Moroni had stationed an army by the borders of the city, and they had cast up dirt round about to shield them from the arrows and the stones of the Lamanites; for behold, they fought with stones and with arrows.
Alma 49:3 Behold, I said that the city of Ammonihah had been rebuilt. I say unto you, yea, that it was in part rebuilt; and because the Lamanites had destroyed it once because of the iniquity of the people, they supposed that it would again become an easy prey for them.
Here are a few more that sound like the author is making up his mind, or changing his mind as he goes along. It's hard to imagine this much rambling while slowly and painstakingly pounding out your words on gold plates.
Alma 50:32 Now behold, the people who were in the land Bountiful, or rather Moroni, feared that they would hearken to the words of Morianton.
Alma 53:10 And now behold, I have somewhat to say concerning the people of Ammon, who, in the beginning, were Lamanites; but by Ammon and his brethren, or rather by the power and word of God, they had been converted unto the Lord;
Alma 54:5 Behold, Ammoron, I have written unto you somewhat concerning this war which ye have waged against my people, or rather which thy brother hath waged against them
Mosiah 8:17 But a seer can know of things which are past, and also of things which are to come, and by them shall all things be revealed, or, rather, shall secret things be made manifest, and hidden things shall come to light, and things which are not known shall be made known by them, and also things shall be made known by them which otherwise could not be known.