Interesting.

I like this koan:

There is an old Zen story about a man riding a horse, galloping frantically down a path. His friend, who is sitting by the side of the road, calls out "Where are you going?" The man replies: "I don't know. Ask the horse!"

Without a mission, the metrics will take you nowhere you want to go.

Before growth hacks, you need a great mission.

The real question is whether, given a great mission, we actually need growth hacks.