Every mistake he's made at Twitter, he's made before, many times. But at Twitter, he did in a more public, spectacular way. In some cases at higher scale. From

Every mistake he's made at Twitter, he's made before, many times. But at Twitter, he did in a more public, spectacular way. In some cases at higher scale. From everything I've seen from him at this point - he won't learn. Plus, he's a 50+ year old man. Can't teach old dogs new tricks.