“It wasn’t the best decision we could make,” said one of my old bosses, “but it was the most defensible.”
What she meant was that she wanted to choose option A but ended up choosing option B because it was the defensible default. She realized that if she chose option A and something went wrong, it would be hard to explain because it was outside of normal. On the other hand, if she chose option A and everything went right, she’d get virtually no upside. A good outcome was merely expected, but a bad outcome would have significant consequences for her. The decision she landed on wasn’t the one she would have made if she owned the entire company. Since she didn’t, she wanted to protect her downside. In asymmetrical organizations, defensive decisions like this one protect the person making the decision.
Source: Defensive Decision Making: What IS Best v. What LOOKS Best