Welcome to the Law Firm Disrupted, a briefing from Law.com editor Dan Packel that surveys new competitive pressures on law firms and how their managers are coping, plus insights on the tactics and tech employed by would-be disruptors.   Have an opinion? Email me here. Want to be alerted to this dispatch in your inbox every Thursday? Sign up here.

It's a bit of a truism in my industry that three examples make a trend. So I came out of editing a story several of my colleagues finished last week impressed by the efforts that Am Law 100 firms are making to invest in partner training.