Why multiple approvers for proposed edits
I have about a zillion rep on SO. I can edit pretty much anything anywhere without needing approval...with one exception. If a low-rep user makes an edit to a post (for example, to improve formatting), I can "approve" that edit but the edit still doesn't take effect until another user also approves it. If I have enough rep that I could have simply made the edit myself in the first place (without requiring approval), why does the edit need a second vote to take effect?