Is cutting a tree reversible? Several things come to mind, maybe not the same tree will grow back or not. Pls help. Thanks much.

Cutting a large tree DOWN, as in severing the trunk, surely is not reversible. We can't cut the tree down, then glue it back on. We can cut the tree down and some trees will sprout new growth from the stump. Cutting the tree trunk with a knife is not reversible in the sense that we can undo what we did but the tree can survive and repair the damage.