"Far better to show them the most effective technique, let them practice it, and move on." Wasn't there a recent post on HN about something being expanded in J

"Far better to show them the most effective technique, let them practice it, and move on." Wasn't there a recent post on HN about something being expanded in Japan called "productive failing"? It's the opposite approach - let them struggle and then show them a/the way to solve the problem. The claim is that method is more effective.